Nutritional status and age at menarche in Amazonian students

Abstract Objectives: Age at menarche (MA) is a proxy for biological maturation and a parameter of socioeconomic changes. Worldwide, anticipation of menarche is associated with nutritional transition and excess weight. The objective of this study was to evaluate the MA in Amazonian students and its association with nutritional status, ethnicity, and socioeconomic level. Methods: Cross-sectional study with 1,017 students aged 6 to 17 living in the city of Manaus, Brazil. MA was analyzed by status quo and recall; its association with body mass index (BMI), race, socioeconomic status, and adult height was examined. Results: 559 (51.9%) participants had already experienced menarche. In 91.7%, menarche occurred between 10 and 14 years of age; the mean age at the onset of menarche was 11.9 years. Overweight (11.6 years) and obese (11.4 years) participants reached menarche earlier than those with normal weight (12 years) and lean (12.7 years) participants. The associations between MA and nutritional status showed that overweight and obesity are risk factors for the early occurrence of menarche. MA was not associated with socioeconomic status/parental education or race. However, excess weight was associated with earlier MA in all races and social classes. The adult height was slightly lower in girls with menarche before 12 years old (157.9 vs 159.4 cm). Conclusion: Regardless of socioeconomic level or ethnicity, excess weight was associated with earlier menarche in Amazonian students.

Pedagogical control scales of vertical jumping performance in untrained adolescents (13-16 years): research by strata.

Background: A scale is used to establish performance ranges in different sciences, it being necessary to design specialized biological and pedagogical indicators in physical activity, sport and health. Objective: To design a scale for the pedagogical control of the vertical jumping ability in untrained adolescents (13-16 years), stratifying the sample by age range, ethnicity, urban and rural area, socioeconomic level, and gender. Methods: A representative sample of the Ecuadorian population (n = 3,705) is studied, classifying it into the aforementioned strata, controlling the vertical jump by ISAK I and II level experts, applying the Sargent Test to measure vertical jumps on a multi-force wall, establishing scales with seven percentile levels, and making comparisons related to chronological age, gender, socioeconomic, and genetic indicators. Results: Significant differences in the vertical jumping performance were determined according to the category or age range (13-14 ≠ 15-16 years) and by gender (w = 0.000). Various levels of performance were determined, classifying the maximum level as talented in the female gender (≥40 cm; and ≥42 cm) and male gender (≥47 cm; and ≥57 cm) in the 13‒14 and 15‒16 years categories, respectively. Sampling comparisons by geographical area only determined significant differences in the male gender, with the jumping ability being higher in urban areas (13‒14 years: w = 0.046; 15‒16 years: w = 0.013). The comparison by ethnic groups showed significant differences (k = 0.030), favoring the Afro-Ecuadorian ethnic group in both genders, while there are significant differences by socioeconomic level, especially between the middle and lower classes. Conclusions: The present research solves the lack of a tool for making correct didactic decisions related to the vertical jumping ability, taking into account various important stratified indicators. The complementary conclusions show significant differences according to the category stratum or age range, the gender stratum, and the ethnic stratum in females and males, where the best average rank favored the Afro-Ecuadorian ethnic group in both genders. There are significant differences in the geographical area stratum in the male gender, and differences in the socioeconomic stratum in favor of the upper and middle classes.

The Interaction between Education and Sex with Alcohol Consumption during the COVID-19 Pandemic: A Cross-Sectional Analysis of Two Brazilian Cities.

This cross-sectional study, carried out between October and December 2020 in two Brazilian cities, aimed to evaluate the joint association of education and sex with habitual and episodic excessive alcohol consumption during the COVID-19 pandemic. Habitual alcohol consumption was defined as drinking any quantity of alcohol at least once per week. Excessive episodic alcohol consumption was defined as the consumption of five or more drinks by men or four or more drinks by women at least once in the last 30 days. Adjusted multivariate logistic regression models were used to analyze associations of education and sex with alcohol consumption. Education was not associated with habitual alcohol consumption and excessive episodic alcohol consumption. However, when evaluating the joint effect between education and sex, it can be seen that men with low education were more likely to habitually consume (OR: 5.85; CI95:2.74-14.84) and abuse alcohol (OR: 4.45; IC95:1.54-12.82) and women with high education were more likely to have habitual (OR: 2.16; IC95:1.18-3.95) and abusive alcohol consumption (OR: 2.00; IC95:1.16-3.43). These findings highlight the modifying effect of sex on the relationship between education and alcohol consumption, such that education influenced alcohol consumption differently between sexes during the pandemic.

Nutritional status and age at menarche in Amazonian students.

OBJECTIVES: Age at menarche (MA) is a proxy for biological maturation and a parameter of socioeconomic changes. Worldwide, anticipation of menarche is associated with nutritional transition and excess weight. The objective of this study was to evaluate the MA in Amazonian students and its association with nutritional status, ethnicity, and socioeconomic level. METHODS: Cross-sectional study with 1,017 students aged 6 to 17 living in the city of Manaus, Brazil. MA was analyzed by status quo and recall; its association with body mass index (BMI), race, socioeconomic status, and adult height was examined. RESULTS: 559 (51.9%) participants had already experienced menarche. In 91.7%, menarche occurred between 10 and 14 years of age; the mean age at the onset of menarche was 11.9 years. Overweight (11.6 years) and obese (11.4 years) participants reached menarche earlier than those with normal weight (12 years) and lean (12.7 years) participants. The associations between MA and nutritional status showed that overweight and obesity are risk factors for the early occurrence of menarche. MA was not associated with socioeconomic status/parental education or race. However, excess weight was associated with earlier MA in all races and social classes. The adult height was slightly lower in girls with menarche before 12 years old (157.9 vs 159.4 cm). CONCLUSION: Regardless of socioeconomic level or ethnicity, excess weight was associated with earlier menarche in Amazonian students.

Socio-environmental factors contributing to the high incidence of COVID-19 in a border city in northern Uruguay / Factores socioambientales que contribuyen a alta incidencia de COVID-19 en ciudad fronteriza del norte de Uruguay / Fatores socioambientais que contribuem para alta incidência de COVID-19 em cidade fronteiriça no norte do Uruguai

Background and Objectives: the present study was conducted in the city of Rivera, situated in northern Uruguay on the border with Brazil. The disease initially progressed slowly in 2020, with subsequent outbreaks followed by a rapid increase in incidence. The objective was to explore the relationship between the spatial distribution of COVID-19 cases in a binational city and variables such as socioeconomic status, population density, and mobility patterns, with the aim of informing public policies. Methods: an exploratory study was conducted between August 2020 and January 2021 using data obtained from the Ministry of Health. The explanatory variables considered included population density, socioeconomic level, and mobility. Three distinct periods from 2020 to 2021 were identified. Spatial autocorrelation was analyzed using Moran's Index and the Gi* statistic (Getis & Ord). Hierarchical cluster analysis was employed to identify homogeneous groups of census segments. Results: a total of 1,846 cases were georeferenced. Through hierarchical cluster analysis, seven homogeneous groups were identified. Mobility was found to explain the incidence of cases among the high socioeconomic level group, while population density accounted for the differences observed in the low socioeconomic group. Conclusion: in this city, priority should be given to populations residing in areas with higher population density and greater mobility. This small-scale territorial analysis provides valuable information for developing localized policies aimed at addressing health crises.(AU)

Justificación y Objetivos: el estudio se realizó en la ciudad de Rivera, situada en el norte del país en la frontera con Brasil. La enfermedad progresó lentamente durante 2020, con brotes posteriores seguidos de un rápido aumento de la incidencia. El objetivo fue explorar la relación entre la distribución espacial de los casos de COVID-19 en una ciudad binacional y variables como nivel socioeconómico, densidad poblacional y patrones de movilidad, con el objetivo de informar políticas públicas. Métodos: se realizó un estudio exploratorio entre agosto 2020 y enero 2021 con datos del Ministerio de Salud, considerando semanas epidemiológicas. Las variables explicativas consideradas fueron densidad poblacional, nivel socioeconómico y movilidad. Se identificaron tres periodos temporales desde agosto 2020 hasta enero 2021. Se analizo la autocorrelación espacial empleando el Índice de Moran y estadística Gi* (Getis & Ord). Mediante el análisis de cluster jerárquico, fue posible identificar grupos homogéneos de segmentos censales. Resultados: se georreferenciaron un total de 1.846 casos. Mediante análisis de cluster jerárquico, se identificaron siete grupos homogéneos. Para el nivel alto socioeconómico, la movilidad es el factor explicativo de una mayor incidencia de casos. Mientras que, para para el grupo de nivel bajo, la densidad de la población fue el factor explicativo de las diferencias en la presentación de la enfermedad. Conclusión: la población a ser priorizada en esta ciudad corresponde a aquellas zonas con mayor densidad poblacional y donde se incrementa la movilidad. El análisis territorial a pequeña escala genera información para la construcción de política local, ante una crisis sanitaria, que la hace más eficaz.(AU)

Justificativa e Objetivos: o presente estudo foi realizado na cidade de Rivera, localizada no norte do Uruguai, na fronteira com o Brasil. A doença progrediu lentamente durante 2020, com surtos subsequentes seguidos por um rápido aumento na incidência. O objetivo foi explorar a relação entre a distribuição espacial dos casos de COVID-19 em uma cidade binacional e variáveis como nível socioeconômico, densidade populacional e padrões de mobilidade, com o objetivo de informar políticas públicas. Métodos: estudo exploratório foi realizado entre agosto de 2020 e janeiro de 2021 com dados do Ministério da Saúde. As variáveis explicativas incluíram densidade populacional, nível socioeconômico e mobilidade. Três períodos distintos de 2020 a 2021 foram identificados. Autocorrelação espacial foi analisada com o Índice de Moran e a estatística Gi* (Getis & Ord). Utilizando a análise de cluster hierárquico, foi possível identificar grupos homogêneos de segmentos censitários. Resultados: um total de 1.846 casos foi georreferenciado. Através da análise de cluster hierárquico, sete grupos homogêneos foram identificados. A mobilidade foi encontrada como explicativa para a incidência de casos no grupo de alto nível socioeconômico, enquanto a densidade populacional explicou as diferenças observadas no grupo de baixo nível socioeconômico. Conclusão: nessa cidade, as populações a serem priorizadas são aquelas que residem em áreas com maior densidade populacional e maior mobilidade. Essa análise territorial em pequena escala fornece informações valiosas para o desenvolvimento de políticas locais destinadas a lidar com crises de saúde.(AU)

[Malignant mesothelioma in Colombia: burden of disease, overview, and subnational sociodemographic index, 2015-2020Mesotelioma maligno na Colômbia: carga de morbidade, visão geral e índice sociodemográfico subnacional, entre 2015 e 2020]. / Mesotelioma maligno en Colombia: carga de enfermedad, panorama general e índice sociodemográfico subnacional, 2015-2020.

Objective: Establish the disease burden of malignant mesothelioma (MM) in Colombia between 2015 and 2020, and its association with the subnational sociodemographic development index (SDI) and with asbestos sites. Methods: Mixed ecological study of the Colombian population diagnosed with MM (according to ICD-10) from 2015 to 2020. The global burden of disease (GBD) was estimated using the methodology proposed by Murray and Lopez, based on prevalence and mortality data obtained from official sources. The subnational (departmental level) SDI was estimated as a measure of socioeconomic development. Linear regressions were established with the GBD, SDI, and documented asbestos sites. Results: The estimated GBD of MM in Colombia during 2015-2020 was 51.71 disability-adjusted life years (DALYs) per 1 000 000 inhabitants (15 375.79 total DALYs), with predominance in people over 50 years of age (91.1%) and males (66.4%).Bogotá and Valle del Cauca were the departments with the highest number of adjusted DALYs. Bogotá had the highest SDI and Guainía and Cesar had the lowest. There was evidence of an association between DALYs and SDI, explaining 22.8% of DALYs. Conclusion: Malignant mesothelioma is the cause of a large number of DALYs, predominantly in the departments with greater socioeconomic development and with companies that used to use asbestos. However, possible underdiagnosis of MM limits analysis of the information.

Objetivo: Estabelecer o ônus da doença por mesotelioma maligno (MM) na Colômbia entre 2015 e 2020 e sua associação ao índice sociodemográfico subnacional (ISS) e locais de amianto. Métodos: Estudo ecológico misto na população colombiana diagnosticada com MM, de acordo com a CID-10 durante 2015 a 2020. A carga global da doença (CGD) foi estimada usando a metodologia proposta por Murray e López com base na prevalência e na mortalidade obtidas de fontes oficiais. O SDI subnacional (nível departamental) foi estimado como uma medida de desenvolvimento socioeconômico e foram estabelecidas regressões lineares com CGD, SDI e localizações documentadas de amianto. Resultados: A estimativa de CGD por MM na Colômbia entre 2015-2020 foi de 51,71 anos de vida ajustados por incapacidade (AVAI) por 1 000 000 de habitantes (15 375,79 AVAI totais), com predominância em pessoas com mais de 50 anos (91,1%) e do sexo masculino (66,4%).Com relação aos departamentos, Bogotá e Valle del Cauca tiveram o maior número de AVAI ajustados, enquanto Bogotá teve o maior SDI, e Guainía e Cesar, o menor. Houve uma associação entre os AVAI e o SDI, sendo que o SDI foi responsável por 22,8% dos AVAI. Conclusões: O MM é a causa de um grande número de AVAI, predominantemente em departamentos com maior desenvolvimento socioeconômico e com a presença de empresas que usavam amianto; no entanto, o possível subdiagnóstico do MM limita a análise das informações.

Determinants of Out-of-Pocket Health Spending in Households in Peru in the Times of the Pandemic (COVID-19).

In 2021, the expenses paid by households worldwide due to COVID-19 showed an increasing behavior and directly affected economic income since they were part of unforeseen expenses among households and became a factor that contributed to the increase in the levels of poverty mainly in households that were not part of the health system. The objective of this research was to establish the main determinants of out-of-pocket spending on health in Peruvian households in the times of the pandemic. A quantitative approach, of a nonexperimental type, with a descriptive and correlational methodological design was considered. The database of the National Household Survey of the National Institute of Statistics and Informatics for 2021 was used as a source of information, applying the binomial logit econometric model. Out-of-pocket expenses during the pandemic compared to normal periods were shared by the members of the households. Since they were part of unforeseen expenses, these expenses mainly impacted the heads of the households and strongly affected household budgets. For this reason, the type of insurance, the suffering of household members from a disease, the results of tests for COVID-19, the expenditure on individual health, the existence of permanent limitations to any member of the household, the presence of an older adult in the household, and the marital status of the head of the household determined and positively influenced out-of-pocket spending in households in Peru with 36.85, 8.48, 6.50, 0.0065, 23.73, 16.79, and 2.44 percentage units. However, the existence of a drinking water service in the household, educational level, and the area of residence determined and negatively influenced out-of-pocket spending in households in Peru with 4.81, 6.75, and 19.26 percentage units, respectively. The type of insurance, the suffering of an individual from a disease, the results of COVID-19 tests, health spending, the existence of permanent limitations, the presence of an older adult in the household, and the marital status of the head of the household positively determined out-of-pocket spending in households in Peru, while the existence of a potable water service, educational level, and the area of residence determined out-of-pocket expenses in a negative or indirect way.

Is there a relationship between socioeconomic level, vegetation cover, free-roaming cats and dogs, and the diversity of native birds? A study in a Latin American capital city.

Understanding how social and environmental factors influence biodiversity can contribute to sustainable development and promote environmental justice in cities. This knowledge is especially important in developing countries with strong social and environmental inequalities. This study investigates native bird diversity in relation to the socioeconomic level of neighborhoods, their plant cover, and the abundance of free-roaming cats and dogs in a Latin American city. Two causal hypotheses were tested: 1) socioeconomic level (defined by education and income) influence native bird diversity indirectly, as an effect mediated by plant cover, as well as directly; 2) in addition, socioeconomic conditions also influence free-roaming cats and dogs which could affect native bird diversity. To test these hypotheses, data were collected at 120 sites located in neighborhoods of different socioeconomic levels across the city of Santiago de Chile and fit to Structural Equation Models. Evidence supported the second hypothesis: in wealthier neighborhoods there was greater plant cover that, in turn, positively influenced native bird diversity; in addition, fewer free-roaming cats and dogs were found in these neighborhoods but they had no effect on native bird diversity. Results suggest that increasing plant cover, especially in more socioeconomically vulnerable neighborhoods, would contribute to urban environmental justice and more equitable opportunities to access native bird diversity.

Evaluación de ingesta dietética según el nivel socioeconómico en un grupo de personas vegetarianas en Colombia

Diferentes estudios han relacionado el nivel socioeconómico con la calidad de la dieta y la prevalencia de riesgo de deficiencia de nutrientes. En personas vegetarianas, cuando no se sigue una dieta adecuada, existe la posibilidad de tener una baja ingesta de ciertos nutrientes, principalmente de vitamina B12, vitamina D, calcio, hierro, zinc, ácidos grasos omega-3 y proteínas. Este estudio tiene como objetivo evaluar la ingesta dietética en personas vegetarianas según su nivel socioeconómico en una región de Colombia. Los participantes completaron un cuestionario en el cual se les preguntó por variables socioeconómicas, antropométricas y la frecuencia de consumo de 48 alimentos y suplementos. Posteriormente, a un subgrupo de la muestra se le realizaron dos recordatorios de 24 horas en diferentes días de la semana. Se encontró que, a menor nivel socioeconómico, hay un menor consumo de lácteos, cereales integrales, frutas y verduras. Así mismo, se observó que según el tipo de vegetarianismo hay diferencias en el consumo de cobalamina, fibra y calcio. Se concluye que, de manera similar a los omnívoros, se requiere de educación nutricional para mejorar la elección de los alimentos y lograr suplir los requerimientos nutricionales, independientemente del nivel económico.

Different studies have related socioeconomic status to diet quality and the prevalence of nutrient deficiency risk. Among vegetarians, when an adequate diet is not followed, there is a possibility of having a low intake of certain nutrients, mainly vitamin B12, vitamin D, calcium, iron, zinc, omega-3 fatty acids and proteins. This study aims to evaluate the dietary intake of vegetarians according to their socioeconomic level in a region of Colombia. Participants completed a questionnaire in which they were asked about socioeconomic and anthropometric variables and the frequency of consumption of 48 foods and supplements. Subsequently, a subgroup of the sample was given two 24-hour reminders on different days of the week. We found that the lower the socioeconomic level, the lower the consumption of dairy products, whole grains, fruits and vegetables. Likewise, it was observed that depending on the type of vegetarianism, there are differences in the consumption of cobalamin, fiber and calcium. We conclude that, similar to omnivores, nutritional education is required to improve the choice of foods and to meet nutritional requirements, regardless of economic level.

Mesotelioma maligno en Colombia: carga de enfermedad, panorama general e índice sociodemográfico subnacional, 2015-2020 / Malignant mesothelioma in Colombia: burden of disease, overview, and subnational sociodemographic index, 2015-2020 / Mesotelioma maligno na Colômbia: carga de morbidade, visão geral e índice sociodemográfico subnacional, entre 2015 e 2020

RESUMEN Objetivo. Establecer la carga de enfermedad por mesotelioma maligno (MM) en Colombia entre 2015 y 2020 y su asociación con el índice sociodemográfico (SDI) subnacional y las localizaciones de asbesto. Métodos. Estudio ecológico mixto en la población colombiana con diagnóstico de MM según la CIE-10 durante 2015 a 2020. La carga global de enfermedad (GBD, por su sigla en inglés) se estimó por medio de la metodología propuesta de Murray y López a partir de la prevalencia y mortalidad obtenida de fuentes oficiales. Se estimó el SDI (por su sigla en inglés) subnacional (nivel departamental) como medida de desarrollo socioeconómico y se establecieron regresiones lineales con la GBD, el SDI y las localizaciones documentadas de asbesto. Resultados. La GBD estimada por MM en Colombia durante 2015-2020 fue de 51,71 años de vida ajustados por discapacidad (AVAD) por cada 1 000 000 de habitantes (15 375,79 AVAD totales), con predominio en personas mayores de 50 años (91,1%) y de sexo masculino (66,4%). A nivel departamental, Bogotá y Valle del Cauca presentaron la mayor cantidad de AVAD ajustados; mientras que Bogotá tuvo el SDI más alto, y Guainía y Cesar el más bajo. Se evidenció una asociación entre los AVAD y el SDI, donde este último explicó 22,8% de los casos de AVAD. Conclusión. El MM es causa de una gran cantidad de AVAD, con predominio en los departamentos con mayor desarrollo socioeconómico, y con presencia de empresas que solían utilizar asbesto; no obstante, el posible subdiagnóstico de MM limita el análisis de la información.

ABSTRACT Objective. Establish the disease burden of malignant mesothelioma (MM) in Colombia between 2015 and 2020, and its association with the subnational sociodemographic development index (SDI) and with asbestos sites. Methods. Mixed ecological study of the Colombian population diagnosed with MM (according to ICD-10) from 2015 to 2020. The global burden of disease (GBD) was estimated using the methodology proposed by Murray and Lopez, based on prevalence and mortality data obtained from official sources. The subnational (departmental level) SDI was estimated as a measure of socioeconomic development. Linear regressions were established with the GBD, SDI, and documented asbestos sites. Results. The estimated GBD of MM in Colombia during 2015-2020 was 51.71 disability-adjusted life years (DALYs) per 1 000 000 inhabitants (15 375.79 total DALYs), with predominance in people over 50 years of age (91.1%) and males (66.4%). Bogotá and Valle del Cauca were the departments with the highest number of adjusted DALYs. Bogotá had the highest SDI and Guainía and Cesar had the lowest. There was evidence of an association between DALYs and SDI, explaining 22.8% of DALYs. Conclusion. Malignant mesothelioma is the cause of a large number of DALYs, predominantly in the departments with greater socioeconomic development and with companies that used to use asbestos. However, possible underdiagnosis of MM limits analysis of the information.

RESUMO Objetivo. Estabelecer o ônus da doença por mesotelioma maligno (MM) na Colômbia entre 2015 e 2020 e sua associação ao índice sociodemográfico subnacional (ISS) e locais de amianto. Métodos. Estudo ecológico misto na população colombiana diagnosticada com MM, de acordo com a CID-10 durante 2015 a 2020. A carga global da doença (CGD) foi estimada usando a metodologia proposta por Murray e López com base na prevalência e na mortalidade obtidas de fontes oficiais. O SDI subnacional (nível departamental) foi estimado como uma medida de desenvolvimento socioeconômico e foram estabelecidas regressões lineares com CGD, SDI e localizações documentadas de amianto. Resultados. A estimativa de CGD por MM na Colômbia entre 2015-2020 foi de 51,71 anos de vida ajustados por incapacidade (AVAI) por 1 000 000 de habitantes (15 375,79 AVAI totais), com predominância em pessoas com mais de 50 anos (91,1%) e do sexo masculino (66,4%). Com relação aos departamentos, Bogotá e Valle del Cauca tiveram o maior número de AVAI ajustados, enquanto Bogotá teve o maior SDI, e Guainía e Cesar, o menor. Houve uma associação entre os AVAI e o SDI, sendo que o SDI foi responsável por 22,8% dos AVAI. Conclusões. O MM é a causa de um grande número de AVAI, predominantemente em departamentos com maior desenvolvimento socioeconômico e com a presença de empresas que usavam amianto; no entanto, o possível subdiagnóstico do MM limita a análise das informações.

Relación entre el perfil epidemiológico y nivel socioeconómico de la población que demanda atención en la Cátedra de Odontología Integral Niños / Relationship between the epidemiological profile and socioeconomic level of the population requiring care at the Children´s Comprehensive Dentistry Chair

Se identificó el perfil epidemiológico y se caracterizó la situación de la población en base al Nivel Socio-Económico (NSE) asociado al estado dentario y se es-tablecieron las zonas geográficas de pacientes que asistieron a la Cátedra Odontología Integral Niños (COIN) de FOUBA durante el año 2019. La muestra total se conformó con 541 niños de 9,2±3,3 años; masculi-nos 51,0%. La segmentación de los estratos sociales dio como resultado que del total de pacientes, el 33,3% perteneció a Clase Baja D2/E, el 39,2% a Clase Baja Superior D1, el 22,4% a Clase Media Baja C3, el 4% a Clase Media Alta C2 y el 1,1% a Clase Alta ABC1. La mayor demanda de atención provino de las dos clases más bajas de la pirámide social, aunque se trata de un servicio arancelado. Los indicadores del estado den-tario ceod, ceos, CPOD y CPOS, indicaron que los niños de menor posición socioeconómica presentaron los índices más altos. La mayor concurrencia provino de la Ciudad Autónoma de Buenos Aires (52%), respecto a los pacientes concurrentes del Gran Buenos Aires (37%), el 80% provino de la zona Oeste y Sur (AU)

The epidemiological profile was identified, and the situation of the population was characterized based on Socio-Economic Status (SES) associated with their dental state. Geographical areas of patients who attended the FOUBA Children's Comprehensive Dentistry Chair during 2019 were established. The total sample consisted of 541 children aged 9.2±3.3 years; males 51.0%. The segmentation of the social strata resulted in 33.3% belonging to Low-Class D2/E, 39.2% to Upper Lower-Class D1, 22.4% to Lower Middle-Class C3, 4% to Upper Middle-Class C2, and 1.1% to Upper-Class ABC1. The largest demand for care came from the two lowest classes of the social pyramid, even though it is a fee-based service. The indicators of dental status dmft, dmfs, DMFT and DMFS, showed that children coming from the lowest socio-economic position presented the highest rate of occurrence. The highest attendance came from the City of Buenos Aires (52%), compared to patients from Buenos Aires suburbs (37%), of which 80% were from the Western and Southern suburbs (AU)

Elevated Risk of Overweight/Obesity-Related Markers and Low Muscular Fitness in Children Attending Public Schools in Chile.

In Chile, children of low socioeconomic status usually attend public schools and have few opportunities to engage in healthy behaviors. This may increase their risk of overweight/obesity and low muscular fitness. Therefore, we aimed to determine the association between the school type attended with overweight/obesity-related markers and the muscular fitness of children in Chile. We included 1410 children (6-13 years old) attending public, subsidized, or private schools. Overweight/obesity-related markers included BMI Z-scores, waist circumference, and body fat percentage. Muscular fitness assessment included handgrip strength and standing long jump. The odds ratios [95% CI] of overweight/obesity, elevated waist circumference, elevated body fat, low handgrip strength, and low standing long jump were compared between school types. Compared with boys attending public schools, those attending subsidized or private schools had lower odds ratios of low handgrip strength (0.63 [0.42-0.94] and 0.44 [0.25-0.78], respectively). Girls attending subsidized schools, compared with those in public schools, had lower odds of overweight/obesity (0.63 [0.44-0.90]) and of having low handgrip strength (0.51 [0.34-0.78]). Compared with girls in public schools, those attending private schools had lower odds (vs. public schools) of overweight/obesity (0.45 [0.28-0.74]), of having elevated body fat (0.53 [0.29-0.96]), and of having low standing long jump (0.41 [0.21-0.77]). The elevated risk of overweight/obesity-related markers and lower muscular fitness in children, particularly girls, attending public schools increase their current and future disease risk. This suggests that childhood socioeconomic status plays a central role in determining disease risk. Health-promoting interventions specifically focused on children from disadvantaged contexts are required.

Niveles de actividad física y su relación con el nivel socioeconómico en adultos de la comuna La Florida

RESUMEN Fundamento: las medidas de aislamiento inducidas por la pandemia de la COVID-19 provocaron una disminución de los niveles de actividad física y un aumento del sedentarismo. Estas condiciones generaron un aumento de la prevalencia de trastornos derivados de estas conductas sedentarias. Aún se desconoce qué factores se ven involucrados en esta disminución de los niveles de actividad física. Objetivo: verificar si existe relación entre el nivel socioeconómico y los niveles de actividad física en adultos pertenecientes a la Región Metropolitana de Chile. Método: participaron 130 personas que respondieron el cuestionario que mide los niveles de actividad física a través de los equivalentes metabólicos y que contestaron sobre la escala personal que mide el bienestar subjetivo, finalmente se consultó sobre cuál era su nivel socioeconómico durante este periodo. Resultados: se determinó que existieron diferencias significativas (p<0,05) en relación a la cantidad de actividad física realizada por las personas que viven en casas versus departamentos y diferencias según el nivel socioeconómico. Se obtuvo una diferencia entre los grupos media-baja y baja; media-baja y media-alta; media y baja; media y alta; baja y media-alta; baja y alta; media-alta y alta. Respecto a la relación existente entre el nivel de bienestar y la realización de actividad física, esta no tuvo un índice relevante (0,09). Conclusiones: las diferencias estadísticamente significativas en el tipo de vivienda y el nivel de actividad física entre los sujetos indica que podría incidir en que el espacio intradomiciliario, es un factor influyente a la hora de poder realizar algún tipo de actividad física. Se debe considerar una variable relevante al momento de planificar acciones preventivas.

ABSTRACT Background: the isolation measures induced by the COVID-19 pandemic caused an increase in sedentary lifestyle and a decrease in physical activity levels. These conditions generated an increase in the prevalence of disorders derived from these sedentary behaviors. It is still unknown what factors are involved in this decrease in physical activity levels. Objective: to verify if there is a relationship between the socioeconomic level and the levels of physical activity in adults belonging to the Chile Metropolitan Region. Method: 130 people participated who answered the questionnaire that measures the levels of physical activity through the metabolic equivalents and who answered on the personal scale that measures subjective well-being and finally, they were asked about their socioeconomic level during this period. Results: it was determined that there were significant differences (p<0.05) in relation to the amount of physical activity in people living in houses versus apartments and differences according to socioeconomic level. It was obtained a difference between the medium-low and low groups; medium-low and medium-high; medium and low; medium and high; low and medium-high; low and high; medium-high and high. Regarding the relationship between the level of well-being and the performance of physical activity, this did not have a relevant index (0.09). Conclusions: the statistically significant differences in the type of housing and the level of physical activity between the subjects indicate that it could influence that the intradomiciliary space is an influential factor when it comes to being able to carry out some type of physical activity. A relevant variable should be considered when planning preventive actions.

Caracterización de una población pediátrica de escasos recursos que habita por encima de 2500 m. s. n. m., positiva para SARS-COV-2 / Characterization of a Low-Income Pediatric Population Living Above 2500 m. a. s. l. Positive for SARS-COV-2 / Caracterizaçáo de urna populaçáo pediátrica de baixa renda vivendo acima de 2.500 m. s. n. m. positiva para SARS-COV-2

Resumen: La infección por el nuevo SARS-COV-2 ha impactado de diversas maneras a toda la sociedad, incluidos los niños. Se describe el comportamiento de esta enfermedad en una población pediátrica de escasos recursos localizada por encima de 2500 m. s. n. m. Este es un trabajo retrospectivo transversal entre marzo y octubre de 2020 en Bogotá involucró niños entre 1 mes y 14 años con RT-PCR positiva para SARS-COV-2. Se estudiaron antecedentes, características sociodemográficas, clínicas, de laboratorio, radiológicas y evolutivas, agrupando los pacientes según la gravedad y analizando su significancia (p < 0.05). Como resultado, se obtuvieron 416 casos, de los cuales 43.3 % eran asintomáticos, 46.6 % sintomáticos leves, 8.9 % graves y 1.2 % críticos. De los consultantes a urgencias, los menores de 1 año fueron los más frecuentes (56.79 %) y los que más se hospitalizaron (35.8 %). El tiempo entre el inicio de los síntomas y la consulta fue en promedio de 2 días, El diagnóstico más frecuente en los pacientes no hospitalizados fue rinofaringitis (58.97 %), y en los que se hospitalizaron fue bronquiolitis (50 %). La mediana del tiempo de hospitalización de todo el grupo fue de 4 días la cual ser prolongó a 7 días para los que requirieron UCI. Con la hospitalización se asocia, entre otras causas, los índices nutricionales < 2 de, taquipnea, dificultad respiratoria, hipoxemia, linfopenia (en mayores de 2 años) (p < 0.05), no influyendo el hacinamiento ni el nivel socioeconómico. Después del estudio, se pudo concluir que la enfermedad es, generalmente, mucho más leve en niños que en adultos, diferenciándose de estos tanto en los factores predisponentes, los paraclínicos y en la evolución. Sin embargo, algunas variables demográficas, clínicas y de laboratorio podrían asociarse con una mayor gravedad en este grupo poblacional.

Abstract: Infection with the new SARS-COV-2 has impacted the entire society, including children, in various ways. The behavior of this disease in a low-income pediatric population located above 2500 m. a. s. I. is described. This is a cross-sectional retrospective study carried out between March and October 2020 in Bogotá involving children between 1 month and 14years old with positive RT-PCR for SARS-COV-2. History, sociodemographic, clinical, laboratory, radiological and evolutionary characteristics were studied, grouping the patients according to severity and analyzing their significance (p < 0.05). As a result, 416 cases were obtained, of which 43.3 % were asymptomatic, 46.6 % mildly symptomatic, 8.9 % severe, and 1.2 % critical. Of the consultants to the emergency room, those under 1 year of age were the most frequent (56.79 %) and those who were hospitalized the most (35.8 %). The time between the onset of symptoms and consultation was an average of 2 days. The most frequent diagnosis in non-hospitalized patients was rhinopharyngitis (58.97 %), and in those who were hospitalized it was bronchiolitis (50 %). The median hospitalization time for the entire group was 4 days, which was extended to 7 days for those who required ICU. Hospitalization is associated with, among other causes, nutritional indices < 2 SD, tachypnea, respiratory distress, hypoxemia, lymphopenia (in those older than 2 years) (p < 0.05), with neither overcrowding nor socioeconomic status as influencing factors. After the study, it was possible to conclude that the disease is generally much milder among children than in adults, differing from these in predisposing factors, paraclinical factors, and evolution. However, some demographic, clinical and laboratory variables could be associated with greater severity in this population group.

Resumo: A infecção com o novo SARS-COV-2 impactou toda a sociedade de várias maneiras, incluindo crianças. O comportamento desta doença em urna população pediátrica de baixa renda localizada acima de 2.500 m. s. n. m. é descrito. Este é um estudo transversal retrospectivo entre margo e outubro de 2020 em Bogotá, envolvendo crianças entre 1 mês e 14 anos com RT-PCR positiva para SARS- COV-2. Foram estudados antecedentes, características sociodemográficas, clínicas, laboratoriais, radiológicas e evolutivas, agrupando os pacientes de acordo com a gravidade e analisando sua significância (p < 0.05). Como resultado, foram obtidos 416 casos, sendo 43.3 % assintomáticos, 46.6 % sintomáticos leves, 8.9 % graves e 1.2 % críticos. Dos pacientes em pronto-socorro, os menores de 1 ano foram os mais frequentes (56.79 %) e os que mais internaram (35.8 %). O tempo entre o inicio dos sintomas e a consulta foi em média de 2 dias, sendo o diagnóstico mais frequente nos pacientes não internados a rinofaringite (58.97 %), e nos internados foi a bronquiolite (50 %). A mediana do tempo de internação para todo o grupo foi de 4 dias, que foi estendida para 7 dias para aqueles que necessitaram de UTI. A hospitalização está associada, entre outras causas, a índices nutricionais < 2 DP, taquipneia, desconforto respiratório, hipoxemia, linfopenia (nos maiores de 2 anos) (p < 0.05), não influenciando a superlotação ou o nível socioeconómico. Após o estudo, foi possível concluir que a doença geralmente é muito mais branda em crianças do que em adultos, diferindo destes em fatores predisponentes, fatores para clínicos e evolução. No entanto, algumas variáveis demográficas, clínicas e laboratoriais podem estar associadas á maior gravidade nesse grupo populacional.

Resiliencia académica: la influencia del esfuerzo, las expectativas y el autoconcepto académico / Academic resilience: The influence of academic effort, expectations, and self-concept

Resumen Introducción: La resiliencia académica consiste en obtener altas calificaciones a pesar de hallarse en una desventaja socioeconómica. En el presente estudio se observó si el esfuerzo, las expectativas y el autoconcepto académicos forman parte de la resiliencia académica o estarían explicando un buen rendimiento académico en general. Método: Los participantes, una población de 7479 adolescentes españoles (M = 13.87; DT = 0.82), fueron divididos en cuatro grupos según el rendimiento académico (Bueno-Malo) y el nivel socioeconómico (Clase alta-Clase baja). Se realizaron análisis de diferencias y regresiones logísticas binarias para detectar cuál de las variables empleadas explicaba el rendimiento académico en los grupos de igual nivel socioeconómico. También se estudió si el sexo influía en la pertenencia a los grupos de buen rendimiento. Resultados: Se observaron diferencias en el esfuerzo, las expectativas y el autoconcepto académicos en función de los cuatro grupos creados; los grupos de buen rendimiento académico obtuvieron puntuaciones más altas independientemente del nivel socioeconómico. Se observó que las expectativas y el autoconcepto académicos explicaban gran parte del rendimiento académico. Se detectó una tasa de mujeres significativamente más alta con relación a la de hombres en los grupos de mayor rendimiento. Conclusiones: Muchas variables, que se han considerado propias de los alumnos académicamente resilientes, explican un buen rendimiento académico, en general, independientemente del nivel socioeconómico.

Abstract Introduction: Academic resilience is defined as getting high marks despite being at a socioeconomic disadvantage. In the present study, it was observed whether Academic Effort, Expectations and Self-Concept are part of academic resilience or would be explaining a good academic performance in general. Method: The participants, a population of 7479 Spanish adolescents (M = 13.87; SD = 0.82), were divided into four groups according to academic performance (Good-Bad) and socioeconomic level (Upper class-Lower class). Analysis of differences and binary logistic regressions were performed to detect which of the variables used explained the academic performance in the groups of the same socioeconomic level. It was also studied whether sex influenced membership in the good performance groups. Results: Differences in Academic Effort, Expectations and Self-concept were found according to the four groups created; the groups with good academic performance obtained higher scores regardless of socioeconomic level. Expectations and academic self-concept were found to explain much of academic performance. A significantly higher rate of women than men was found in higher performance groups. Conclusions: Many variables that have been considered typical of academically resilient students explain good academic performance in general, regardless of socioeconomic status.

Prevalencia de sobrepeso, obesidad con actividad física y nivel socioeconómico en escolares de educación básica / Prevalence of overweight, obesity with physical activity and socioeconomic status in elementary school students

INTRODUCCIÓN: el sobrepeso y obesidad infantil son problemas de salud pública en México, por lo que es necesario crear entornos que capaciten y motiven conductas positivas en relación a un estilo de vida saludable. OBJETIVOS: determinar la prevalencia de sobrepeso y obesidad. Describir la actividad física y sedentarismo con relación al nivel socioeconómico. MATERIAL Y MÉTODOS: se llevó a cabo un estudio descriptivo, observacional, transversal y prospectivo en 278 alumnos entre seis y 12 años de edad. Se calculó el IMC, se aplicaron cuatro cuestionarios: CVAFA, CCSNP, CNSE, AMAI 2018. RESULTADOS: la prevalencia de sobrepeso y obesidad fue de 42.7%. La actividad física vigorosa 49.6%. El 95% pasa dos horas diarias frente al televisor, 87% ocupa la computadora una hora diaria para tareas. El 32% toma siesta de 30 minutos. El nivel socioeconómico estuvo correlacionado a los primeros tres niveles. CONCLUSIONES: la prevalencia de sobrepeso y obesidad representa casi la mitad de la población estudiantil. La alimentación de tipo obesogénico da como resultado el IMC elevado, aunque el nivel socieconómico permitía obtener alimentos de buena calidad. La actividad física significativa sólo fue realizada por un bajo porcentaje de estudiantes. Las horas de descanso se encontraron adecuadas a su edad.

INTRODUCTION: Childhood overweight and obesity are public health problems in Mexico, so it is necessary to create environments that train and motivate positive behaviors in relation to a healthy lifestyle. OBJECTIVES: To determinate the prevalence of overweight and obesity. Describe physical activity and sedentary behaviors with socioeconomic status. MATERIAL AND METHODS: A descriptive, observational, cross-sectional and prospective study was carried out in 278 students between six and 12 years old. The BMI was calculated, four questionnaires were applied: CVAFA, CCSNP, CNSE, AMAI 2018. RESULTS: the prevalence of overweight and obesity was 42.7%. Vigorous physical activity 49.6%. A 95% spend two hours a day in front of the television, 87% use the computer an hour a day for homework. 32% nap for 30 minutes. The economic level is correlated to the first three levels. CONCLUSIONS: the prevalence of overweight and obesity represents almost half of the student population. The obesogenic type diet results in a high BMI, although the economic level allowed obtaining quality food. Significant physical activity was also performed by a low percentage of students. The hours of rest were found to be appropriate for their age.

Sedentary Behavior and Physical Activity of Schoolchildren from a Low-income Region in Brazil: Associations with Maternal Variables / Comportamento Sedentário e Atividade Física de Escolares de uma Região de Baixa Renda no Brasil: Associações com Variáveis Maternas

INTRODUCTION: In the last decade, an increasing number of studies investigated markers of Sedentary Behavior (SB) and Physical Activity (PA) in school-age children since they lead to nutritional status changes in this groupOBJECTIVE: To analyze associations between maternal factors and SB and PA of schoolchildrenMETHODS: This is a cross-sectional study involving 410 mothers of children enrolled between the first and the fifth year in municipal schools of Santa Cruz, RN, Brazil. By applying questionnaires, socioeconomic variables of the family, maternal data, and habits related to SB and PA on weekdays and weekends were investigated. Pearson's chi-square test and Fisher's exact test were used to test associationsRESULTS: It was observed that income below one minimum wage and less maternal education were associated with greater active transportation among children (69.3%, p = 0.012 and 68.4%, p = 0.022, respectively). Children from low-income families (65.4%, p = 0.016) and who had six and seven siblings (8.2%, p = 0.023 and 7.6%, p = 0.037, respectively) presented lower SB at the weekend. Low level of maternal education was associated with reduced PA during the week (70.8%, p = 0.024CONCLUSION: Socioeconomic (i.e., family income and number of siblings) and maternal factors (i.e., level of education) are important indicators for time spent on sedentary behavior and physical activity of schoolchildren

INTRODUÇÃO: Na última década, um número crescente de estudos tem se preocupado em investigar marcadores de Comportamento Sedentário (CS) e Atividade Física (AF) em crianças na idade escolar, por serem reconhecidos como causadores de alterações do estado nutricional nesta faixa etáriaOBJETIVO: Analisar os fatores associados maternos sobre o CS e AF de escolaresMÉTODO: Trata-se de uma pesquisa com delineamento transversal, envolvendo 410 mães de crianças matriculadas entre o primeiro e quinto ano nas escolas municipais de Santa Cruz, RN, Brasil. Por meio da aplicação de questionários, foram investigadas variáveis socioeconômicas da família, dados maternos e hábitos relacionados ao CS e AF dos escolares, nos dias da semana e no final de semana. Para testar associações foi utilizado o teste Qui-quadrado de Pearson e Teste Exato de FisherRESULTADOS: Foi observado que uma renda inferior a um salário mínimo e menor escolaridade materna foram associados com maior deslocamento ativo das crianças (69,3%, p = 0,012 e 68,4% p = 0,022, respectivamente). As crianças de famílias com baixa renda (65,4%, p = 0,016) e que tinham seis e sete irmãos (8,2%, p = 0,023 e 7,6%, p = 0,037, respectivamente) apresentam menor CS no final de semana. Um menor grau de escolaridade materna foi associado com uma menor prática de AF durante a semana (70,8%, p = 0,024CONCLUSÃO: Conclui-se que os fatores socioeconômicos (i.e., renda familiar e número de irmãos) e maternos (i.e., nível de escolaridade) são importantes indicadores para o tempo dispendido em comportamento sedentário e atividade física de escolares

Dietary and sociodemographic factors associated with nonalcoholic fatty liver in obese pediatric patients.

INTRODUCTION: Obesity is associated with nonalcoholic fatty liver disease (NAFLD) in children. Our aim was to analyze the association of dietary and sociodemographic factors with NAFLD in obese children and adolescents. MATERIALS AND METHODS: Thirty-three obese patients from 6-16 years of age were included in the present analytic cross-sectional study. Obesity was diagnosed with a body mass index z-score > 2 SD. NAFLD was estimated by liver ultrasound, serum amino transferases, and elastography. The sociodemographic variables were evaluated using validated questionnaires. Diet was estimated through two 24-h recall dietary surveys focused on the quantity of food energy, simple sugars, polyunsaturated fatty acids (PUFAs), and antioxidants. RESULTS: Hepatic steatosis was identified by abdominal ultrasound in 13 patients (39.4%) and the serum alanine aminotransferase level was above the upper reference value in 54.2%. A higher educational level in both parents, greater monthly food expenditure, and a higher socioeconomic level were associated with NAFLD. Overall, simple sugar and saturated fat consumption was above the recommended daily intake, whereas vitamin E and PUFA consumption was below those parameters. CONCLUSIONS: NAFLD was identified in one-third of the cases. There was an association between NAFLD and sociodemographic variables. Both groups had an increased intake of simple sugars and a reduced intake of PUFAs. The selective occurrence of NAFLD could be related to a genetic predisposition that has been demonstrated in a Mexican population.

O impacto do ensino público e privado na memória de crianças / The impact of public and private education on children's memory / El impacto de la educación pública y privada en la memoria de los niños

Esse estudo teve como objetivo comparar o desempenho de memória operacional e memória episódica em estudantes do ensino público e privado. A amostra foi composta por 79 crianças, com idades entre 9 e 12 anos, divididos por gênero, idade e tipo de escola. A avaliação foi realizada individualmente por meio da CMS e Raven. Para a análise dos dados, foi utilizado o teste t de Student, com nível de significância adotado de 5%. Os resultados evidenciam melhor desempenho das crianças de escola pública nas tarefas de inteligência e memória visual, enquanto os estudantes de escola particular apresentaram melhor desempenho em memória verbal e visual, corroborando com estudos que apontam diferenças em tarefas cognitivas para crianças de níveis socioeconômicos diferentes. Esses resultados fomentam a importância de mais pesquisas na área, para compreensão e melhorias no desenvolvimento cognitivo das crianças e adolescentes brasileiros. (AU)

This study aimed to compare the performance of working memory and episodic memory in students from public and private schools. A sample consisted of 79 children, aged between 9 and 12 years; divided by gender, age and type of school. The assessment was carried out individually using the CMS and Raven's test. For the data analysis student's t-test was used, the level of significance adopted was 5%. The results showed better performance by the public school children in tasks of intelligence and visual memory, while the students from private schools showed better performance in verbal and visual memory, corroborating studies that highlight differences in cognitive tasks for children with different socioeconomic levels. These results demonstrate the importance of more research in the area, aiming to better understand and improve the cognitive development of Brazilian children and adolescents. (AU)

Este estudio tuvo como objetivo comparar el rendimiento de la memoria de trabajo y la memoria episódica en estudiantes de escuelas públicas y privadas. La muestra se compuso por 79 niños, con edades comprendidas entre 9 y 12 años; divididos por género, edad y tipo de escuela. La evaluación se realizó individualmente a través de la CMS y Raven. Se utilizó la prueba t de student para el análisis de datos, el nivel de significación adoptado fue del 5%. Los resultados evidenciaron un mejor rendimiento de los niños de las escuelas públicas en tareas de inteligencia y memoria visual, mientras que los estudiantes de la escuela privada mostraron un mejor rendimiento en la memoria verbal y visual, corroborando con estudios que señalan diferencias en las tareas cognitivas para niños de diferentes niveles socioeconómicos. Estos resultados alientan la importancia de una mayor investigación en el área, para comprender y mejorar el desarrollo cognitivo de los niños y adolescentes brasileños. (AU)

Factores relacionados con maloclusiones en niños ecuatorianos de 3-9 años de edad / Factors related to malocclusion in 3-9-year-old Ecuadorian children

RESUMEN Introducción: Es muy importante reconocer los factores que pueden estar relacionados con maloclusión en una determinada población, para realizar medidas preventivas basadas en su realidad. Objetivo: determinar factores relacionados con maloclusiones en niños ecuatorianos de 3 a 9 años de edad. Métodos: Estudio epidemiológico transversal realizado a 400 niños de 3 a 9 años de edad, que estaban en tratamiento en las clínicas de Odontopediatría de la Facultad de Odontología de la Universidad Central del Ecuador. Los padres de los niños respondieron a preguntas realizadas por un único investigador experimentado sobre la salud, hábitos y nivel socioeconómico. Cada niño fue evaluado clínicamente extra e intraoralmente, siendo cada cara de las piezas dentales observadas en sentido vertical, transversal y sagital, además de la cara oclusal. Se verificó sí existían interferencias oclusales, mordida cruzada posterior o anterior y mordida abierta. Los datos se tabularon en Excel y se aplicó la prueba chi cuadrado (p< 0,05). Resultados: El 77 % de niños presentó maloclusión (p< 0,001). No se encontró una relación significativa de la presencia de maloclusión en los niños con sus familiares que presentaban maloclusión, bajo nivel socioeconómico y lactancia por menos de 1 año (p> 0,05). La mordida cruzada y las interferencias oclusales estuvieron asociadas (p< 0,001). No se encontró asociación entre la mordida abierta y la respiración bucal (p= 0,944). Conclusiones: Existe una cantidad significativa de maloclusión. La herencia familiar, tipo y tiempo de lactancia y nivel socioeconómico no tienen una relación significativa con la maloclusión. La mordida cruzada y las interferencias oclusales están asociadas. La respiración bucal puede no causar mordida abierta en los niños de 3 a 9 años.

ABSTRACT Introduction: Recognizing the factors potentially related to malocclusion in a given population is crucial to implement preventive actions based on that information. Objective: Determine the factors related to malocclusion in 3-9-year-old Ecuadorian children. Methods: A cross-sectional epidemiological study was conducted of 400 children aged 3-9 years attending pediatric dental clinics at the Central University of Ecuador School of Dentistry. The children's parents answered a number of questions about health, habits and socioeconomic level at the request of a single experienced researcher. Each child underwent extra- and intraoral clinical examination in which the sides of each tooth were observed on a vertical, transversal and sagittal plane, as well as the occlusal side. Verification was made of the presence of occlusal interference, posterior or anterior crossbite and open bite. The data obtained were tabulated onto Excel spreadsheets and the chi-square test was applied (p< 0.05). Results: Of the total children studied 77% had malocclusion (p< 0.001). The presence of malocclusion in children was not found to have a significant relationship to relatives with malocclusion, low socioeconomic level or breastfeeding for less than 1 year (p> 0.05). An association was found between crossbite and occlusal interference (p< 0.001). No association was observed between open bite and mouth breathing (p= 0.944). Conclusions: Malocclusion is significantly prevalent. Family inheritance, breastfeeding type and duration, and socioeconomic level do not have a significant relationship to malocclusion. Crossbite and occlusal interference are associated. Mouth breathing may not be the reason for open bite in 3-9-year-old children.