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1.
Rev Bras Epidemiol ; 21Suppl 02(Suppl 02): e180002, 2019 Feb 04.
Article in Portuguese, English | MEDLINE | ID: mdl-30726347

ABSTRACT

The Health, Wellbeing and Aging Study (SABE) began in 2000 under the coordination of the Pan American Health Organization as a multicenter study developed in seven urban centers of Latin America and the Caribbean, to determine the health and living conditions of elderly in this region. In Brazil, the study was developed in the city of São Paulo, where 2,143 individuals (cohort A) aged 60 years or older were selected through probabilistic sampling. In 2006, 1,115 of these individuals were interviewed a second time, and a new probabilistic cohort of individuals aged 60 to 64 years was added (cohort B; n=298). Thus the SABE Study - Brazil was transformed into a multi-cohort longitudinal study, with the objective of identifying changes that occur in the aging process among different generations. In 2010, a longitudinal follow-up was developed with cohorts A and B, with the addition of a new cohort of individuals aged 60 to 64 years (cohort C; n=355). Thethree surveys (2000, 2006 and 2010) involved the application of a questionnaire, anthropometric evaluation and functional tests, with the subsequent inclusion of blood collection for the evaluation of biochemical, immunological and genetic variables, as well as an accelerometer for the measuring of caloric expenditure.


O Estudo Saúde, Bem-Estar e Envelhecimento (SABE) teve início em 2000 sob coordenação da Organização Pan-Americana da Saúde como um estudo multicêntrico desenvolvido em sete centros urbanos da América Latina e Caribe para traçar o perfil das condições de vida e saúde das pessoas idosas na região. No Brasil, foi realizado na cidade de São Paulo, onde foram entrevistadas 2.143 pessoas (coorte A), com idade igual ou superior a 60 anos, por amostra probabilística. Em 2006, o Estudo SABE - Brasil transformou-se em longitudinal. Nesse momento, foram localizadas e reentrevistadas 1.115 pessoas, introduzindo-se uma nova amostra probabilística de idosos com idade de 60 a 64 anos (coorte B, n = 298), o transformando em longitudinal de múltiplas coortes com o objetivo principal de identificar as transformações que ocorrem no processo de envelhecimento entre as diferentes gerações. No ano 2010 foi desenvolvido o seguimento longitudinal das coortes A e B e introduzida nova coorte de 60 a 64 anos (coorte C, n = 355). Nas três coletas (2000, 2006 e 2010) utilizou-se um instrumento sob a forma de questionário, avaliação antropométrica e testes funcionais, introduzindo-se a coleta de sangue para avaliação de parâmetros bioquímicos, imunológicos e genéticos e, também, o acelerômetro para medir objetivamente o gasto calórico dos idosos.


Subject(s)
Aging , Geriatric Assessment/methods , Geriatric Assessment/statistics & numerical data , Health Surveys/methods , Health Surveys/statistics & numerical data , Age Distribution , Aged , Aged, 80 and over , Algorithms , Brazil , Female , Healthy Aging , Humans , Longitudinal Studies , Male , Middle Aged , Reference Standards , Sex Distribution , Socioeconomic Factors , Surveys and Questionnaires
2.
Rev. bras. epidemiol ; 21(supl.2): e180002, 2018. tab, graf
Article in Portuguese | LILACS | ID: biblio-985271

ABSTRACT

RESUMO: O Estudo Saúde, Bem-Estar e Envelhecimento (SABE) teve início em 2000 sob coordenação da Organização Pan-Americana da Saúde como um estudo multicêntrico desenvolvido em sete centros urbanos da América Latina e Caribe para traçar o perfil das condições de vida e saúde das pessoas idosas na região. No Brasil, foi realizado na cidade de São Paulo, onde foram entrevistadas 2.143 pessoas (coorte A), com idade igual ou superior a 60 anos, por amostra probabilística. Em 2006, o Estudo SABE - Brasil transformou-se em longitudinal. Nesse momento, foram localizadas e reentrevistadas 1.115 pessoas, introduzindo-se uma nova amostra probabilística de idosos com idade de 60 a 64 anos (coorte B, n = 298), o transformando em longitudinal de múltiplas coortes com o objetivo principal de identificar as transformações que ocorrem no processo de envelhecimento entre as diferentes gerações. No ano 2010 foi desenvolvido o seguimento longitudinal das coortes A e B e introduzida nova coorte de 60 a 64 anos (coorte C, n = 355). Nas três coletas (2000, 2006 e 2010) utilizou-se um instrumento sob a forma de questionário, avaliação antropométrica e testes funcionais, introduzindo-se a coleta de sangue para avaliação de parâmetros bioquímicos, imunológicos e genéticos e, também, o acelerômetro para medir objetivamente o gasto calórico dos idosos.


ABSTRACT: The Health, Wellbeing and Aging Study (SABE) began in 2000 under the coordination of the Pan American Health Organization as a multicenter study developed in seven urban centers of Latin America and the Caribbean, to determine the health and living conditions of elderly in this region. In Brazil, the study was developed in the city of São Paulo, where 2,143 individuals (cohort A) aged 60 years or older were selected through probabilistic sampling. In 2006, 1,115 of these individuals were interviewed a second time, and a new probabilistic cohort of individuals aged 60 to 64 years was added (cohort B; n=298). Thus the SABE Study - Brazil was transformed into a multi-cohort longitudinal study, with the objective of identifying changes that occur in the aging process among different generations. In 2010, a longitudinal follow-up was developed with cohorts A and B, with the addition of a new cohort of individuals aged 60 to 64 years (cohort C; n=355). Thethree surveys (2000, 2006 and 2010) involved the application of a questionnaire, anthropometric evaluation and functional tests, with the subsequent inclusion of blood collection for the evaluation of biochemical, immunological and genetic variables, as well as an accelerometer for the measuring of caloric expenditure.


Subject(s)
Humans , Male , Female , Aged , Aged, 80 and over , Algorithms , Geriatric Assessment/methods , Geriatric Assessment/statistics & numerical data , Health Surveys/methods , Health Surveys/statistics & numerical data , Reference Standards , Socioeconomic Factors , Brazil , Aging , Surveys and Questionnaires , Longitudinal Studies , Sex Distribution , Age Distribution , Healthy Aging , Middle Aged
3.
Appl Physiol Nutr Metab ; 41(6): 659-65, 2016 Jun.
Article in English | MEDLINE | ID: mdl-27227571

ABSTRACT

Excess body weight leads to a variety of metabolic changes and increases the risk for cardiovascular diseases (CVD) in adulthood. The objective of this study was to investigate the presence of risk markers for CVD among Brazilian adolescents of normal weight and with excess body weight. The markers included blood pressure, C-reactive protein, homocysteine, tumor necrosis factor alpha, fibrinogen, fasting insulin and glucose, homeostasis model assessment of insulin resistance (HOMA-IR), leptin, total cholesterol, low-density lipoprotein cholesterol (LDL-c), high-density lipoprotein cholesterol (HDL-c), and triglycerides. We calculated odds ratios (OR) using logistic regression and adjusted for potential confounders such as age, sex, physical activity, and socioeconomic background. Compared with normal weight subjects, overweight/obese adolescents were more likely to have higher systolic blood pressure (OR = 3.49, p < 0.001), fasting insulin (OR = 8.03, p < 0.001), HOMA-IR (OR = 8.03, p < 0.001), leptin (OR = 5.55, p < 0.001), and LDL-c (OR = 5.50, p < 0.001) and lower serum HDL-c concentrations (OR = 2.76, p = 0.004). After adjustment for confounders, the estimates did not change substantially, except for leptin for which the risk associated with overweight increased to 11.09 (95% CI: 4.05-30.35). In conclusion, excess body weight in adolescents exhibits strong associations with several markers that are established as causes of CVD in adults. This observation stresses the importance of primary prevention and of maintaining a healthy body weight throughout adolescence to reduce the global burden of CVD.


Subject(s)
Biomarkers/blood , Body Weight , Cardiovascular Diseases/blood , Metabolic Syndrome/blood , Overweight/blood , Adolescent , Blood Glucose/metabolism , Blood Pressure , Brazil , C-Reactive Protein/metabolism , Cardiovascular Diseases/complications , Cholesterol, HDL/blood , Cholesterol, LDL/blood , Cross-Sectional Studies , Exercise , Female , Fibrinogen/metabolism , Homocysteine/blood , Humans , Insulin/blood , Insulin Resistance , Leptin/blood , Logistic Models , Male , Metabolic Syndrome/complications , Overweight/complications , Risk Factors , Socioeconomic Factors , Triglycerides/blood , Tumor Necrosis Factor-alpha/blood
4.
Rev Bras Epidemiol ; 17(1): 163-74, 2014.
Article in English, Portuguese | MEDLINE | ID: mdl-24896790

ABSTRACT

INTRODUCTION: The Telephone Survey has several attractions, such as low operational costs and speed the process, when compared to the Household Survey. However, the exclusion of house holds without a landline phone canpose a serious question of the valid it yof the estimates. OBJECTIVE: Evaluating the use of post stratification adjustments to correct the potential biasdue to low coverage of landline phonein the results published in the Vigitel system. METHODS: We compared the prevalence obtained by the Household Survey and the Vigitel, in Aracaju, Sergipe, where 49% of households had a telephone, calculating the differences measured between the surveys thatused the square root mean square error as a measure of accuracy of the estimate. RESULTS: The Household Survey showed ten variables associated with landline phone. From this set of variables, post stratification weights corrected the potential bias of the consumption of beans in five or more days per week, vegetables intake regularly and recommended self-assessment of health as bad and morbidity of diabetes,while the weights partially eliminated the bias of the prevalence of asthma, possession of health insurance coverage and prevention of breast cancer in women aged 50 to 59 years. CONCLUSIONS: In order to reduce the potential bias in the results published by Vigitel system, in areas with low telephone coverage, it becomes necessary to use alternative weighting procedures and selection strategy of external variables for construction of post-stratification weights.


Subject(s)
Family Characteristics , Health Surveys/statistics & numerical data , Telephone/statistics & numerical data , Bias , Brazil
5.
Rev Bras Epidemiol ; 17(1): 147-62, 2014.
Article in English, Portuguese | MEDLINE | ID: mdl-24896789

ABSTRACT

The present study aims at describing the sampling plan, operational aspects and strategies used to optimize the field work of a cross-sectional, population-based study conducted in a southern capital of Brazil. For this purpose, the sample design, data collection instrument, selection of interviewers, pilot study, data collection, field logistics, quality control, consistency control, costs, and divulgation of results are herein described. The study's response rate was 85.3%. We found that the comparison of frequency measurements with and without self-assessment had no significant impact on the estimates, and that the design effect, estimated at 2, was sufficient for most calculations. The reproducibility of the questionnaire was satisfactory, with Kappa values and intraclass correlation coefficients ranging from 0.6 to 0.9. The strategies used to overcome operational problems, such as counting of households, use of maps, questionnaire structuring, rigorous organization of the field work and monitoring of the estimates were fundamental in conducting the study.


Subject(s)
Health Surveys/methods , Adult , Brazil , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Pilot Projects , Surveys and Questionnaires , Young Adult
6.
Rev Saude Publica ; 48(1): 86-93, 2014 Feb.
Article in Portuguese | MEDLINE | ID: mdl-24789641

ABSTRACT

OBJECTIVE: To compare the efficiency and accuracy of sampling designs including and excluding the sampling of individuals within sampled households in health surveys. METHODS: From a population survey conducted in Baixada Santista Metropolitan Area, SP, Southeastern Brazil, lowlands between 2006 and 2007, 1,000 samples were drawn for each design and estimates for people aged 18 to 59 and 18 and over were calculated for each sample. In the first design, 40 census tracts, 12 households per sector, and one person per household were sampled. In the second, no sampling within the household was performed and 40 census sectors and 6 households for the 18 to 59-year old group and 5 or 6 for the 18 and over age group or more were sampled. Precision and bias of proportion estimates for 11 indicators were assessed in the two final sets of the 1000 selected samples with the two types of design. They were compared by means of relative measurements: coefficient of variation, bias/mean ratio, bias/standard error ratio, and relative mean square error. Comparison of costs contrasted basic cost per person, household cost, number of people, and households. RESULTS: Bias was found to be negligible for both designs. A lower precision was found in the design including individuals sampling within households, and the costs were higher. CONCLUSIONS: The design excluding individual sampling achieved higher levels of efficiency and accuracy and, accordingly, should be first choice for investigators. Sampling of household dwellers should be adopted when there are reasons related to the study subject that may lead to bias in individual responses if multiple dwellers answer the proposed questionnaire.


Subject(s)
Family Characteristics , Health Surveys/methods , Sampling Studies , Adolescent , Adult , Brazil , Humans , Middle Aged , Residence Characteristics , Urban Population , Young Adult
7.
Rev. bras. epidemiol ; 17(1): 147-162, 03/2014. tab, graf
Article in English | LILACS | ID: lil-711250

ABSTRACT

The present study aims at describing the sampling plan, operational aspects and strategies used to optimize the field work of a cross-sectional, population-based study conducted in a southern capital of Brazil. For this purpose, the sample design, data collection instrument, selection of interviewers, pilot study, data collection, field logistics, quality control, consistency control, costs, and divulgation of results are herein described. The study's response rate was 85.3%. We found that the comparison of frequency measurements with and without self-assessment had no significant impact on the estimates, and that the design effect, estimated at 2, was sufficient for most calculations. The reproducibility of the questionnaire was satisfactory, with Kappa values and intraclass correlation coefficients ranging from 0.6 to 0.9. The strategies used to overcome operational problems, such as counting of households, use of maps, questionnaire structuring, rigorous organization of the field work and monitoring of the estimates were fundamental in conducting the study.


O estudo objetiva descrever o plano amostral, aspectos operacionais e estratégias utilizadas para otimizar o trabalho de campo de um estudo transversal de base populacional desenvolvido em uma capital do sul do Brasil. Para tal, foram descritos plano amostral, instrumento de coleta, seleção de entrevistadoras, estudo piloto, coleta de dados e logística de campo, controle de qualidade, controle de consistência, custos e divulgação dos resultados. A taxa de resposta do estudo foi de 85,3%. Foi verificado que a comparação de medidas de frequência com e sem ponderação não teve impacto importante nas estimativas e que o efeito de delineamento, estimado em 2, foi suficiente para a maior parte dos cálculos. A reprodutibilidade do questionário foi satisfatória, com valores de Kappa e coeficiente de correlação intraclasse variando entre 0,6 a 0,9. As estratégias utilizadas para transpor problemas operacionais, como contagem dos domicílios, uso de mapas, estruturação do questionário, organização rigorosa do campo e acompanhamento das estimativas foram fundamentais para a condução do estudo.


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Young Adult , Health Surveys/methods , Brazil , Cross-Sectional Studies , Pilot Projects , Surveys and Questionnaires
8.
Rev. bras. epidemiol ; 17(1): 163-174, 03/2014. tab, graf
Article in English | LILACS | ID: lil-711261

ABSTRACT

INTRODUCTION: The Telephone Survey has several attractions, such as low operational costs and speed the process, when compared to the Household Survey. However, the exclusion of house holds without a landline phone canpose a serious question of the valid it yof the estimates. OBJECTIVE: Evaluating the use of post stratification adjustments to correct the potential biasdue to low coverage of landline phonein the results published in the Vigitel system. METHODS: We compared the prevalence obtained by the Household Survey and the Vigitel, in Aracaju, Sergipe, where 49% of households had a telephone, calculating the differences measured between the surveys thatused the square root mean square error as a measure of accuracy of the estimate. RESULTS: The Household Survey showed ten variables associated with landline phone. From this set of variables, post stratification weights corrected the potential bias of the consumption of beans in five or more days per week, vegetables intake regularly and recommended self-assessment of health as bad and morbidity of diabetes,while the weights partially eliminated the bias of the prevalence of asthma, possession of health insurance coverage and prevention of breast cancer in women aged 50 to 59 years. CONCLUSIONS: In order to reduce the potential bias in the results published by Vigitel system, in areas with low telephone coverage, it becomes necessary to use alternative weighting procedures and selection strategy of external variables for construction of post-stratification weights. .


INTRODUÇÃO: O Inquérito por Telefone, quando comparado ao Inquérito Domiciliar, apresenta vários atrativos, em especial baixo custo operacional e rapidez do processo de divulgação de resultados. No entanto, a exclusão de domicílios sem telefone fixo pode apresentar problemas na validade externa das estimativas. OBJETIVO: Avaliar os efeitos do uso de pós-estratificação para corrigir vícios decorrentes da baixa cobertura de domicílios com telefone nos resultados divulgados no sistema Vigitel. MÉTODOS: Comparar resultados levantados no Inquérito Domiciliar com Vigitel no município de Aracaju, Sergipe, cuja cobertura era de 49% de telefonia fixa. O vício do Vigitel foi expresso pela diferença entre as prevalências do Vigitel e do Inquérito Domiciliar, sendo calculada a raiz quadrada do erro quadrático médio como medida de acurácia da estimativa. RESULTADOS: O Inquérito Domiciliar apontou dez variáveis associadas à posse de linha telefônica residencial (LTR). Desse conjunto de variáveis, os pesos de pós-estratificação corrigiram os vícios potencias do consumo de feijão em cinco ou mais dias por semana, consumo de folhas, legumes e verduras (FLV) regularmente e recomendado, autoavaliação de saúde considerada ruim e morbidade referida de diabetes,enquanto os pesos eliminaram parcialmente o vício da prevalência de asma, posse de plano de saúde e a cobertura de prevenção de câncer de mama em mulheres de 50 a 59 anos. CONCLUSÕES: Tendo em vista a redução dos vícios potencias nos resultados divulgados pelo sistema Vigitel, em regiões de baixa cobertura de telefone fixo, torna-se necessário o uso de procedimentos de ponderação alternativo e a estratégia de seleção ...


Subject(s)
Family Characteristics , Health Surveys/statistics & numerical data , Telephone/statistics & numerical data , Bias , Brazil
9.
Rev. saúde pública ; 48(1): 86-93, 2014. tab
Article in Portuguese | LILACS | ID: lil-710598

ABSTRACT

OBJETIVO : Comparar a eficiência e a acurácia de delineamentos de amostragem com e sem sorteio intradomiciliar em inquéritos de saúde. MÉTODOS : Com base nos dados de um inquérito realizado na Baixada Santista, SP, entre 2006 e 2007, foram retiradas 1.000 amostras sob cada um dos delineamentos e, em cada amostra, foram obtidas estimativas para pessoas de 18 a 59 anos de idade e de 18 anos e mais. Sob o primeiro, foram sorteados 40 setores censitários, 12 domicílios por setor e uma pessoa por domicílio. Na análise, os dados foram ponderados pelo número de adultos residentes nos domicílios. Sob o segundo, foram sorteados 40 setores, seis domicílios por setor para o grupo de 18 a 59 anos de idade e cinco ou seis domicílios para o grupo de 18 anos e mais. Não houve sorteio dentro do domicílio. Medidas de precisão e de vício das estimativas de proporção para 11 indicadores foram calculadas nos dois conjuntos finais das amostras selecionadas para os dois tipos de delineamentos. Estes foram comparados por meio das medidas relativas: coeficiente de variação, razão vício/média, razão vício/erro padrão e erro quadrático médio relativo. O custo foi comparado considerando custo básico por pessoa, custo por domicílio e números de pessoas e domicílios. RESULTADOS : Os vícios mostraram-se desprezíveis nos dois delineamentos. A precisão foi maior para o delineamento sem sorteio e o custo foi menor. CONCLUSÕES : O delineamento sem sorteio intradomicilar mostrou-se superior em termos de eficiência e acurácia, devendo ser a opção preferencial do pesquisador. O sorteio de moradores deve ser adotado quando houver razões referentes ao objeto de estudo que possam levar à introdução de vícios nas respostas dos entrevistados ...


OBJETIVO: Comparar la eficiencia y la precisión de delineamientos de muestreo con y sin sorteo intra-domiciliar en pesquisas de salud. MÉTODOS: Con base en los datos de una pesquisa realizada en la Baixada Santista, SP – Brasil, entre 2006 y 2007, se retiraron 1.000 muestras considerando cada uno de los delineamientos y, en cada muestra, se obtuvo estimativas para personas de 18 a 59 años de edad y de 18 años y más. En el primero, fueron sorteados 40 sectores censados, 12 domicilios por sector y una persona por domicilio. En el análisis, los datos fueron ponderados por el número de adultos residentes en los domicilios. En el segundo, se sortearon 40 sectores, seis domicilios por sector para el grupo de 18 a 59 años de edad y cinco o seis domicilios para el grupo de 18 años y más. No hubo sorteo dentro del domicilio. Medidas de precisión y de vicio de las estimativas de proporción para 11 indicadores fueron calculadas en los dos conjuntos finales de muestras seleccionadas para los dos tipos de delineamientos. Ambos fueron comparados por medio de medidas relativas: coeficiente de variación, cociente vicio/promedio, cociente vicio/desviación estándar y desviación media cuadrática relativa. El costo fue comparado considerando costo básico por persona, costo por domicilio y número de personas y domicilios. RESULTADOS: Los vicios se mostraron insignificantes en los dos delineamientos. La precisión fue mayor para el delineamiento sin sorteo y el costo fue menor. CONCLUSIONES: El delineamiento sin sorteo intra-domiciliar se mostró superior en términos de eficiencia y precisión, siendo la opción preferencial del investigador. El sorteo de la población debe ser adoptado cuando existan motivos relacionados con el objeto de estudio que puedan llevar a la introducción de vicios en las respuestas de los entrevistados en el caso de que varios de ellos respondan al cuestionario propuesto.


OBJECTIVE : To compare the efficiency and accuracy of sampling designs including and excluding the sampling of individuals within sampled households in health surveys. METHODS : From a population survey conducted in Baixada Santista Metropolitan Area, SP, Southeastern Brazil, lowlands between 2006 and 2007, 1,000 samples were drawn for each design and estimates for people aged 18 to 59 and 18 and over were calculated for each sample. In the first design, 40 census tracts, 12 households per sector, and one person per household were sampled. In the second, no sampling within the household was performed and 40 census sectors and 6 households for the 18 to 59-year old group and 5 or 6 for the 18 and over age group or more were sampled. Precision and bias of proportion estimates for 11 indicators were assessed in the two final sets of the 1000 selected samples with the two types of design. They were compared by means of relative measurements: coefficient of variation, bias/mean ratio, bias/standard error ratio, and relative mean square error. Comparison of costs contrasted basic cost per person, household cost, number of people, and households. RESULTS : Bias was found to be negligible for both designs. A lower precision was found in the design including individuals sampling within households, and the costs were higher. CONCLUSIONS : The design excluding individual sampling achieved higher levels of efficiency and accuracy and, accordingly, should be first choice for investigators. Sampling of household dwellers should be adopted when there are reasons related to the study subject that may lead to bias in individual responses if multiple dwellers answer the proposed questionnaire. .


Subject(s)
Adolescent , Adult , Humans , Middle Aged , Young Adult , Family Characteristics , Health Surveys/methods , Sampling Studies , Brazil , Residence Characteristics , Urban Population
10.
Rev. saúde pública ; 48(1): 86-93, 2014.
Article in Portuguese | LILACS, Sec. Est. Saúde SP, SESSP-ISPROD, Sec. Est. Saúde SP | ID: biblio-1371602

ABSTRACT

OBJETIVO: Comparar a eficiência e a acurácia de delineamentos de amostragem com e sem sorteio intradomiciliar em inquéritos de saúde. MÉTODOS: Com base nos dados de um inquérito realizado na Baixada Santista, SP, entre 2006 e 2007, foram retiradas 1.000 amostras sob cada um dos delineamentos e, em cada amostra, foram obtidas estimativas para pessoas de 18 a 59 anos de idade e de 18 anos e mais. Sob o primeiro, foram sorteados 40 setores censitários, 12 domicílios por setor e uma pessoa por domicílio. Na análise, os dados foram ponderados pelo número de adultos residentes nos domicílios. Sob o segundo, foram sorteados 40 setores, seis domicílios por setor para o grupo de 18 a 59 anos de idade e cinco ou seis domicílios para o grupo de 18 anos e mais. Não houve sorteio dentro do domicílio. Medidas de precisão e de vício das estimativas de proporção para 11 indicadores foram calculadas nos dois conjuntos finais das amostras selecionadas para os dois tipos de delineamentos. Estes foram comparados por meio das medidas relativas: coeficiente de variação, razão vício/média, razão vício/erro padrão e erro quadrático médio relativo. O custo foi comparado considerando custo básico por pessoa, custo por domicílio e números de pessoas e domicílios. RESULTADOS: Os vícios mostraram-se desprezíveis nos dois delineamentos. A precisão foi maior para o delineamento sem sorteio e o custo foi menor. CONCLUSÕES: O delineamento sem sorteio intradomicilar mostrou-se superior em termos de eficiência e acurácia, devendo ser a opção preferencial do pesquisador. O sorteio de moradores deve ser adotado quando houver razões referentes ao objeto de estudo que possam levar à introdução de vícios nas respostas dos entrevistados no caso de vários moradores responderem ao questionário proposto.


Subject(s)
Demography , Health Surveys , Methods , Cluster Sampling , Sampling Studies
11.
Rev. saúde pública ; 47(supl.3): 3-11, dez. 2013. tab, graf
Article in Portuguese | LILACS | ID: lil-702126

ABSTRACT

OBJETIVO: Apresentar aspectos do plano de amostragem da Pesquisa Nacional de Saúde Bucal (Projeto SBBrasil), com questões teóricas e operacionais que não devem ser ignoradas nas análises dos dados primários. MÉTODOS: A população de estudo compreende cinco grupos demográficos de áreas urbanas brasileiras no ano de 2010. Amostragem por conglomerados em dois ou três estágios foi usada adotando diferentes unidades primárias. Pesos amostrais e efeitos de delineamento (deff) foram as medidas utilizadas para avaliar a consistência das amostras. RESULTADOS: No total, foram alcançados 37.519 indivíduos. Estimativas de deff , embora aceitáveis na sua maioria, apresentaram distorções em alguns domínios. A maioria (90%) das amostras apresentou resultados concordantes com a precisão proposta no plano amostral. As medidas preventivas contra perdas e efeito do processo de conglomerados no tamanho mínimo das amostras mostrou-se efetiva e a maioria das estimativas para deff não ultrapassou o valor 2, mesmo para os resultados decorrentes da ponderação. CONCLUSÕES: As amostras alcançadas no inquérito SBBrasil 2010 se aproximaram das principais proposições de precisão do delineamento. Algumas probabilidades resultaram desiguais entre unidades primárias de um mesmo domínio. Os usuários desse banco de dados devem considerar essa particularidade, introduzindo pesos amostrais nos cálculos das estimativas pontuais, erros padrão, intervalo de confiança e efeitos do delineamento. .


OBJETIVO: Estimar la prevalencia y la extensión de la caries radicular en la población adulta y anciana de Brasil. MÉTODOS: A partir de los datos de la Investigación Nacional de Salud Bucal (SBBrasil 2010) se examinaron 9.564 adultos y 7.509 ancianos en domicilios de las 26 capitales y en el Distrito Federal y de 150 municipios del interior de cada macro región. Se implementaron criterios de diagnóstico establecidos por la Organización Mundial de la Salud. Para estudio de la prevalencia y de extensión se utilizó el índice de caries radicular y el índice de raíces cariadas y obturadas. RESULTADOS: La prevalencia de caries radicular fue de 16,7% en los adultos y 13,6% en los ancianos; el índice de raíces cariadas y obturadas fue de 0,42 y 0,32 respectivamente, siendo la mayor parte compuesta por caries no tratadas. Se observaron diferencias en la experiencia de caries radicular entre capitales y macro regiones, con valores mayores en capitales del Norte y Noreste. El índice de caries radicular en los adultos varió de 1,4% en Aracaju (SE) a 15,1% en Salvador (BA) y en los ancianos de 3,5% en Porto Velho (RO) a 29,9% en Palmas (TO). Se verificó incremento de caries radicular con la edad y mayor expresividad de la enfermedad en hombres de ambos grupos etarios. CONCLUSIONES: Se identificó una gran variación de la prevalencia y extensión de la caries radicular entre y dentro de las regiones de Brasil, tanto en adultos como en ancianos, y la mayor parte de la caries radicular se encuentra no tratada. Se recomienda la incorporación de este agravio al sistema de vigilancia en salud bucal, debido a su tendencia creciente. .


OBJECTIVE: To present aspects of the sampling plan of the Brazilian Oral Health Survey (SBBrasil Project). with theoretical and operational issues that should be taken into account in the primary data analyses. METHODS: The studied population was composed of five demographic groups from urban areas of Brazil in 2010. Two and three stage cluster sampling was used. adopting different primary units. Sample weighting and design effects (deff) were used to evaluate sample consistency.  RESULTS: In total. 37.519 individuals were reached. Although the majority of deff estimates were acceptable. some domains showed distortions. The majority (90%) of the samples showed results in concordance with the precision proposed in the sampling plan. The measures to prevent losses and the effects the cluster sampling process in the minimum sample sizes proved to be effective for the deff. which did not exceeded 2. even for results derived from weighting. CONCLUSIONS: The samples achieved in the SBBrasil 2010 survey were close to the main proposals for accuracy of the design. Some probabilities proved to be unequal among the primary units of the same domain. Users of this database should bear this in mind, introducing sample weighting in calculations of point estimates, standard errors, confidence intervals and design effects. .


Subject(s)
Adolescent , Adult , Aged , Child , Child, Preschool , Humans , Young Adult , Dental Health Surveys/methods , Models, Statistical , Research Design/standards , Brazil/epidemiology , Cluster Analysis , Demography , Sampling Studies , Urban Population/statistics & numerical data
12.
Rev Saude Publica ; 47(2): 316-25, 2013 Apr.
Article in English, Portuguese | MEDLINE | ID: mdl-24037359

ABSTRACT

OBJECTIVE: To evaluate the effects of using post-stratification weight to correct the bias due to low coverage of households with telephones. METHODS: A Comparison was made of results collected by the Household Survey with those of the VIGITEL (Telephone Survey to Monitor Risk and Protective Factors for Chronic Diseases) in Rio Branco, Northern Brazil, in 2007 whose coverage was 40% of landline phones. The potential bias in the VIGITEL survey was expressed by the difference between the rates of prevalence of the VIGITEL and Household Survey, calculated as the square root mean square error (MSE) as a measure of the accuracy of the estimate. RESULTS: The weighting procedure of VIGITEL corrected potential bias in the prevalence of consumption of fruit and vegetables, meat with visible fat, smoking, bad self-assessment of health status and morbidity of cholesterol or triglycerides. In the prevalence of physical activity in leisure time and morbidity of asthma, bronchial asthma, chronic bronchitis or emphysema, the procedure adopted by VIGITEL did not reduce the potential bias. CONCLUSIONS: in order to construct post-stratification weights which minimize the potential bias in estimates of the variables due to low coverage of households with landlines, it becomes necessary to use alternative methods of weighting and strategies of selecting external variables.


Subject(s)
Population Surveillance/methods , Telephone , Adolescent , Adult , Aged , Aged, 80 and over , Bias , Brazil , Educational Status , Female , Humans , Male , Middle Aged , Young Adult
13.
Rev. saúde pública ; 47(2): 316-325, jun. 2013. tab, graf
Article in Portuguese | LILACS | ID: lil-685577

ABSTRACT

OBJETIVO: Analisar efeitos do uso de pesos de pós-estratificação para corrigir vícios decorrentes da baixa cobertura de domicílios com telefone. MÉTODOS: Comparação dos resultados levantados pelo Inquérito Domiciliar com o Sistema de Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico (Vigitel), em Rio Branco, AC, 2007, cuja cobertura era de 40% de telefonia fixa. O vício potencial do Vigitel foi expresso pela diferença entre as prevalências do Vigitel e do Inquérito Domiciliar, calculada a raiz quadrática do erro quadrático médio como medida de acurácia da estimativa. RESULTADOS: O procedimento de ponderação do Vigitel corrigiu o vício potencial nas prevalências de consumo de frutas, legumes e verduras, de carnes com gordura visível, o ser fumante, a autoavaliação do estado de saúde ruim e da morbidade referida de colesterol ou triglicéride. O procedimento adotado pelo Vigitel não reduziu o vício nas prevalências da prática de atividade física no tempo livre e de morbidade referida de asma, bronquite asmática, bronquite crônica ou enfisema. CONCLUSÕES: É necessário o uso de métodos alternativos de ponderação e a estratégia de seleção de variáveis externas para construção de pesos de pós-estratificação que minimizem o vício potencial das estimativas das variáveis decorrentes da baixa cobertura de domicílios com telefone fixo. .


OBJETIVO: Analizar efectos del uso de pesos de post-estratificación para corregir vicios consecuentes de la baja cobertura de domicilios con teléfono. MÉTODOS: Comparación de los resultados encontrados en la Encuesta Domiciliar con el Sistema de Vigilancia de Factores de Riesgo y Protección para Enfermedades Crónicas por Pesquisa Telefónica (Vigitel), en Rio Branco, AC, Brasil, 2007, cuya cobertura era de 40% de telefonía fija. El vicio potencial de Vigitel fue expresado por la diferencia entre las prevalencias de Vigitel y de la Encuesta Domiciliar, calculando la raíz cuadrada del error cuadrado promedio como medida de la precisión de la estimación. RESULTADOS: El procedimiento de ponderación de Vigitel corrigió el vicio potencial en las prevalencias de consumo de frutas, legumbres y verduras, de carnes con grasas visibles, el ser fumador, la autoevaluación del estado del mal estado de salud y de la morbilidad referida por el colesterol o triglicéridos. El procedimiento adoptado por Vigitel no redujo el vicio en las prevalencias de la práctica de actividad física en el tiempo libre y de morbilidad referida por el asma, bronquitis asmática, bronquitis crónica o enfisema. CONCLUSIONES: Es necesario el uso de métodos alternativos de ponderación y la estrategia de selección de variables externas para construcción de pesos de post-estratificación que minimicen el vicio potencial de las estimaciones de las variables consecuentes de la baja cobertura de domicilios con teléfono fijo. .


OBJECTIVE To evaluate the effects of using post-stratification weight to correct the bias due to low coverage of households with telephones. METHODS A Comparison was made of results collected by the Household Survey with those of the VIGITEL (Telephone Survey to Monitor Risk and Protective Factors for Chronic Diseases) in Rio Branco, Northern Brazil, in 2007 whose coverage was 40% of landline phones. The potential bias in the VIGITEL survey was expressed by the difference between the rates of prevalence of the VIGITEL and Household Survey, calculated as the square root mean square error (MSE) as a measure of the accuracy of the estimate. RESULTS The weighting procedure of VIGITEL corrected potential bias in the prevalence of consumption of fruit and vegetables, meat with visible fat, smoking, bad self-assessment of health status and morbidity of cholesterol or triglycerides. In the prevalence of physical activity in leisure time and morbidity of asthma, bronchial asthma, chronic bronchitis or emphysema, the procedure adopted by VIGITEL did not reduce the potential bias. CONCLUSIONS in order to construct post-stratification weights which minimize the potential bias in estimates of the variables due to low coverage of households with landlines, it becomes necessary to use alternative methods of weighting and strategies of selecting external variables. .


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Population Surveillance/methods , Telephone , Bias , Brazil , Educational Status
14.
Rev Saude Publica ; 47 Suppl 3: 3-11, 2013 Dec.
Article in Portuguese | MEDLINE | ID: mdl-24626576

ABSTRACT

OBJECTIVE: To present aspects of the sampling plan of the Brazilian Oral Health Survey (SBBrasil Project). with theoretical and operational issues that should be taken into account in the primary data analyses. METHODS: The studied population was composed of five demographic groups from urban areas of Brazil in 2010. Two and three stage cluster sampling was used. adopting different primary units. Sample weighting and design effects (deff) were used to evaluate sample consistency. RESULTS: In total. 37,519 individuals were reached. Although the majority of deff estimates were acceptable. some domains showed distortions. The majority (90%) of the samples showed results in concordance with the precision proposed in the sampling plan. The measures to prevent losses and the effects the cluster sampling process in the minimum sample sizes proved to be effective for the deff. which did not exceeded 2. even for results derived from weighting. CONCLUSIONS: The samples achieved in the SBBrasil 2010 survey were close to the main proposals for accuracy of the design. Some probabilities proved to be unequal among the primary units of the same domain. Users of this database should bear this in mind, introducing sample weighting in calculations of point estimates, standard errors, confidence intervals and design effects.


Subject(s)
Dental Health Surveys/methods , Models, Statistical , Research Design/standards , Adolescent , Adult , Aged , Brazil/epidemiology , Child , Child, Preschool , Cluster Analysis , Demography , Humans , Sampling Studies , Urban Population/statistics & numerical data , Young Adult
15.
Cad Saude Publica ; 28 Suppl: s40-57, 2012.
Article in Portuguese | MEDLINE | ID: mdl-22714967

ABSTRACT

The SBBrasil 2010 Project (SBB10) was designed as a nationwide oral health epidemiological survey within a health surveillance strategy. This article discusses methodological aspects of the SBB10 Project that can potentially help expand and develop knowledge in the health field. This was a nationwide survey with stratified multi-stage cluster sampling. The sample domains were 27 State capitals and 150 rural municipalities (counties) from the country's five major geographic regions. The sampling units were census tracts and households for the State capitals and municipalities, census tracts, and households for the rural areas. Thirty census tracts were selected in the State capitals and 30 municipalities in the countryside. The precision considered the demographic domains grouped by density of the overall population and the internal variability of oral health indices. The study evaluated dental caries, periodontal disease, malocclusion, fluorosis, tooth loss, and dental trauma in five age groups (5, 12, 15-19, 35-44, and 65-74 years).


Subject(s)
Dental Health Surveys/methods , Oral Health/statistics & numerical data , Adolescent , Adult , Aged , Brazil/epidemiology , Censuses , Child , Child, Preschool , Dental Caries/epidemiology , Dental Health Surveys/statistics & numerical data , Dental Occlusion , Fluorosis, Dental/epidemiology , Humans , Middle Aged , Periodontal Diseases/epidemiology , Research Design/standards , Rural Health/statistics & numerical data , Sampling Studies , Tooth Injuries/epidemiology , Urban Health/statistics & numerical data , Young Adult
16.
Cad Saude Publica ; 28(4): 629-40, 2012 Apr.
Article in Portuguese | MEDLINE | ID: mdl-22488309

ABSTRACT

The objective was to analyze the characteristics of burn injuries treated in emergency departments (ED) and associated factors. This was a cross-sectional study of 761 ED visits collected through the National Injury Surveillance System in 2009. The majority of patients were males (58.6%), and the most prevalent age brackets were 30-49 years (23.1%) and 0-4 years (23%). Most burns occurred at home (62.1%), especially among females and children, and in commerce/services/industry/construction (19.1%), mainly among males 20-49 years. Work-related burns comprised 29.1% of the overall sample. Alcohol use prior to the injury was reported in 5.1% of cases. Causal agents across all age brackets were: contact with hot substances (43.6%) and exposure to fire and flames (24.2%); among the economically productive age groups, association with chemicals substances was common. Burns in children 0-14 years were associated with injuries at home, contact with heat and hot substances, and subsequent hospitalization; burns in the 15-49-year bracket were associated with exposure to fire/flames and electrical current, injuries occurring in public places, and outpatient treatment and discharge. The study highlights the importance of burn prevention strategies targeting children and workers.


Subject(s)
Burns/epidemiology , Emergency Service, Hospital/statistics & numerical data , Adolescent , Adult , Age Distribution , Brazil/epidemiology , Burns/etiology , Burns/prevention & control , Child , Child, Preschool , Cross-Sectional Studies , Delivery of Health Care/statistics & numerical data , Female , Hospitalization/statistics & numerical data , Humans , Infant , Infant, Newborn , Male , Middle Aged , Risk Factors , Sex Distribution , Socioeconomic Factors , Young Adult
17.
Cad. saúde pública ; 28(4): 629-640, abr. 2012. graf, tab
Article in Portuguese | LILACS | ID: lil-625462

ABSTRACT

O objetivo foi analisar os atendimentos por queimaduras em serviços de emergência, e fatores associados. Estudo transversal de 761 atendimentos coletados pelo Sistema de Vigilância de Violências e Acidentes em 2009. A maioria foi do sexo masculino (58,6%); adultos de 30 a 49 anos (23,1%) e crianças de 0 a 9 anos (23%). A residência foi o local de ocorrência mais frequente (62,1%), especialmente para crianças e mulheres; em seguida comércio, serviços, indústria e construção (19,1%), especialmente entre homens de 20 a 49 anos. Queimaduras no trabalho foram 29,1% do total. Uso de álcool chegou a 5,1%. Agentes causadores em todas as idades: substância quente (43,6%) e fogo/chama (24,2%); na faixa produtiva: substâncias químicas. As queimaduras entre 0 e 14 anos foram associadas com residência, substância e objeto quente e internação hospitalar; entre os de 15 a 49 anos associaram-se com fogo/chama e choque elétrico, via pública e alta da emergência. Estratégias de prevenção para crianças e trabalhadores devem ser implantadas.


The objective was to analyze the characteristics of burn injuries treated in emergency departments (ED) and associated factors. This was a cross-sectional study of 761 ED visits collected through the National Injury Surveillance System in 2009. The majority of patients were males (58.6%), and the most prevalent age brackets were 30-49 years (23.1%) and 0-4 years (23%). Most burns occurred at home (62.1%), especially among females and children, and in commerce/services/industry/construction (19.1%), mainly among males 20-49 years. Work-related burns comprised 29.1% of the overall sample. Alcohol use prior to the injury was reported in 5.1% of cases. Causal agents across all age brackets were: contact with hot substances (43.6%) and exposure to fire and flames (24.2%); among the economically productive age groups, association with chemicals substances was common. Burns in children 0-14 years were associated with injuries at home, contact with heat and hot substances, and subsequent hospitalization; burns in the 15-49-year bracket were associated with exposure to fire/flames and electrical current, injuries occurring in public places, and outpatient treatment and discharge. The study highlights the importance of burn prevention strategies targeting children and workers.


Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Middle Aged , Young Adult , Burns/epidemiology , Emergency Service, Hospital/statistics & numerical data , Unified Health System , Age Distribution , Brazil/epidemiology , Burns/etiology , Burns/prevention & control , Cross-Sectional Studies , Delivery of Health Care/statistics & numerical data , External Causes , Hospitalization/statistics & numerical data , Risk Factors , Sex Distribution , Socioeconomic Factors
18.
Cad. saúde pública ; 28(supl): s40-s57, 2012. ilus, mapas, tab
Article in Portuguese | LILACS | ID: lil-638741

ABSTRACT

O Projeto SBBrasil 2010 (SBB10) foi concebido como um levantamento epidemiológico em saúde bucal, de base nacional, dentro da estratégia de vigilância em saúde. O objetivo deste artigo é apresentar aspectos da metodologia do SBB10 que possam contribuir para ampliar e desenvolver conhecimentos na área de saúde. Com relação ao plano amostral, trata-se de uma pesquisa por conglomerados e com múltiplos estágios. Capitais e municípios do interior das cinco regiões brasileiras compõem os domínios da amostra, cujas unidades amostrais foram, respectivamente, setor censitário e domicílio para as capitais, e município, setor censitário e domicílio para o interior. Nas capitais foram sorteados 30 setores e, no interior de cada região, 30 municípios. A precisão considerou os domínios agrupados segundo o grau de densidade no total da população e a variabilidade interna dos índices. Foram avaliadas as condições de cárie dentária, doença periodontal, oclusopatias, fluorose, traumatismo dentário e edentulismo em cinco grupos etários (5, 12, 15 a 19, 35 a 44 e 65 a 74 anos).


The SBBrasil 2010 Project (SBB10) was designed as a nationwide oral health epidemiological survey within a health surveillance strategy. This article discusses methodological aspects of the SBB10 Project that can potentially help expand and develop knowledge in the health field. This was a nationwide survey with stratified multi-stage cluster sampling. The sample domains were 27 State capitals and 150 rural municipalities (counties) from the country's five major geographic regions. The sampling units were census tracts and households for the State capitals and municipalities, census tracts, and households for the rural areas. Thirty census tracts were selected in the State capitals and 30 municipalities in the countryside. The precision considered the demographic domains grouped by density of the overall population and the internal variability of oral health indices. The study evaluated dental caries, periodontal disease, malocclusion, fluorosis, tooth loss, and dental trauma in five age groups (5, 12, 15-19, 35-44, and 65-74 years).


Subject(s)
Adolescent , Adult , Aged , Child , Child, Preschool , Humans , Middle Aged , Young Adult , Dental Health Surveys/methods , Oral Health/statistics & numerical data , Brazil/epidemiology , Censuses , Dental Occlusion , Dental Caries/epidemiology , Dental Health Surveys/statistics & numerical data , Fluorosis, Dental/epidemiology , Periodontal Diseases/epidemiology , Research Design/standards , Rural Health/statistics & numerical data , Sampling Studies , Tooth Injuries/epidemiology , Urban Health/statistics & numerical data
19.
Rev. saúde pública ; 45(6): 1088-1098, dez. 2011. tab
Article in Portuguese | LILACS | ID: lil-606872

ABSTRACT

OBJETIVO: Estimar o número de ocorrências de nascidos vivos e, por conseqüência, o sub-registro civil de nascidos vivos. MÉTODOS: As bases de dados do Sistema Nacional de Informação sobre Nascidos Vivos e do Registro Civil do Instituto Brasileiro de Geografia e Estatística, nos segundo e terceiro trimestres de 2006 do estado de Sergipe, foram pareadas por relacionamento determinístico a partir do número da Declaração de Nascido Vivo. A desagregação geográfica adotada foi a de microrregião de residência da mãe. Os modelos de Huggins para populações fechadas foram aplicados para estimar as probabilidades de captura em cada base e o total de nascidos vivos ocorrido no período, dentro de cada desagregação geográfica. O aplicativo utilizado para as estimações foi o Software MARK®. RESULTADOS: O sub-registro civil no período analisado foi de 19,3 por cento. A aplicação do método de captura-recaptura para estimar sub-registro de nascidos vivos é factível, inclusive para desagregações geográficas menores do que unidade da federação. O relacionamento determinístico foi prejudicado em quatro microrregiões, devido à falta de preenchimento do número da Declaração de Nascido Vivo na base do Instituto Brasileiro de Geografia e Estatística. Identificou-se que a idade da mãe afeta a probabilidade de captura pelo Registro Civil, característica de heterogeneidade na população de nascidos vivos. CONCLUSÕES: O método de captura-recaptura mostrou-se viável para a estimação de sub-registro de nascidos vivos.


OBJECTIVE: Estimate the number of live births and, therefore, underreporting of live births. METHODS: The databases of the Live Birth Information System and the Civil Registry of the Brazilian Institute of Geography and Statistics, from the second and third trimesters of 2006 in Sergipe state (Northeastern Brazil) were paired by deterministic linkage based on the number of the Live Birth Declaration. The geographic disaggregation utilized was mother's microregion of residence. Huggins closed population models were used to estimate the capture probabilities for each database and the total live births during the period, within each geographic subdivision. MARK® software was used for the estimates. RESULTS: Underregistration during the period studied was 19.3 percent. Application of the capture-recapture method to estimate underregistration of live births is possible, including for geographic disaggregations smaller than a state. The deterministic linkage was impaired in four microregions, due to non-inclusion of the Live Birth Declaration number in the database of the Brazilian Institute of Geography and Statistics. Maternal age, a heterogeneity characteristic in the population of live births, affected the probability of capture by the civil registry. CONCLUSIONS: Capture-recapture was a viable method to estimate the underregistration of live births.


OBJETIVO: Estimar el número de ocurrencias de nacidos vivos, y en consecuencia, el subregistro civil de nacidos vivos. MÉTODOS: Las bases de datos del Sistema Nacional de Información sobre Nacidos Vivos y del Registro Civil del Instituto Brasileño de Geografía y Estadística, en los segundo y tercero trimestres de 2006 del estado de Sergipe (Noreste de Brasil), fueron pareadas por relación determinística a partir del número de la Declaración de Nacido Vivo. La desagregación geográfica adoptada fue la de microregión de residencia de la madre. Los modelos de Huggins para poblaciones cerradas fueron aplicados para estimar las probabilidades de captura en cada base y el total de nacidos vivos ocurrido en el período, dentro de cada desagregación geográfica. El aplicativo utilizado para las estimaciones fue el Software MARK®. RESULTADOS: El subregistro civil en el período analizado fue de 19,3 por ciento. La aplicación del método de captura-recaptura para estimar subregistro de nacidos vivos es factible, inclusive para desagregaciones geográficas menores que la unidad de federación. La relación deterministica fue perjudicada en cuatro microregiones, debido a la falta de llenado del número de la Declaración de Nacido Vivo en la base del Instituto Brasileño de Geografía y Estadística. Se identificó que la edad de la madre afecta la probabilidad de captura por el Registro Civil, característica de heterogeneidad en la población de nacidos vivos. CONCLUSIONES: El método de captura-recaptura se mostró viable para la estimación de subregistro de nacidos vivos.


Subject(s)
Humans , Birth Certificates , Civil Registration , Live Birth/epidemiology , Population Surveillance/methods , Registries/statistics & numerical data , Underregistration , Birth Rate , Brazil/epidemiology , Demography , Information Systems , Maternal Age , Medical Record Linkage , Probability
20.
Rev Saude Publica ; 45(6): 1088-98, 2011 Dec.
Article in English, Portuguese | MEDLINE | ID: mdl-22124739

ABSTRACT

OBJECTIVE: Estimate the number of live births and, therefore, underreporting of live births. METHODS: The databases of the Live Birth Information System and the Civil Registry of the Brazilian Institute of Geography and Statistics, from the second and third trimesters of 2006 in Sergipe state (Northeastern Brazil) were paired by deterministic linkage based on the number of the Live Birth Declaration. The geographic disaggregation utilized was mother's microregion of residence. Huggins closed population models were used to estimate the capture probabilities for each database and the total live births during the period, within each geographic subdivision. MARK® software was used for the estimates. RESULTS: Underregistration during the period studied was 19.3%. Application of the capture-recapture method to estimate underregistration of live births is possible, including for geographic disaggregations smaller than a state. The deterministic linkage was impaired in four microregions, due to non-inclusion of the Live Birth Declaration number in the database of the Brazilian Institute of Geography and Statistics. Maternal age, a heterogeneity characteristic in the population of live births, affected the probability of capture by the civil registry. CONCLUSIONS: Capture-recapture was a viable method to estimate the underregistration of live births.


Subject(s)
Birth Certificates , Live Birth/epidemiology , Population Surveillance/methods , Registries/statistics & numerical data , Birth Rate , Brazil/epidemiology , Demography , Humans , Information Systems , Maternal Age , Medical Record Linkage , Probability
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