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AIM: To explore the prevalence and influencing factors of poor vision among 3 014 primary school students in Wucheng District, Jinhua City, in order to provide evidence for the intervention measures of poor vision.METHODS: Using a cross-sectional study, a self-designed questionnaire was done, including general conditions and influencing factors of vision. The international standard logarithmic visual acuity chart was used for visual acuity detection. The risk factors that were statistically significant among the single factor groups were used as independent variables for multivariate Logistic regression analysis.RESULTS: A total of 1 367 students with poor vision were detected, the detection rate was 45.36%, among which mild poor vision rare was 26.08%; moderate rate was 11.51%; and severe rate was 7.76%. Multivariate Logistic regression analysis showed that senior grades, parental myopia, daily insufficient sleep and outdoor activity, overuse of electronics or computers and no eye exercise were risk factors for poor vision.CONCLUSION: The rate of poor vision among the primary school students was severe, schools should take measures to improve and prevent students' poor vision by increasing outdoor activity time, correcting poor reading and writing posture, and reducing the time spent on electronic products.
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Objective: To determine the effect on voice parameters in pupils and their teacher of a three-week Workplace Vocal Health Promotion Program (WVHPP) in a school setting. Methods: Longitudinal study with a design phase and a pilot phase. Voice recordings of connected speech were used to collect information on voice functioning before and after the implementation of the program. The workplace vocal health promotion program was implemented with two purposes: (1) to reduce noisy conditions inside the classrooms that may cause loud voice production, which has been found associated with voice disorders among teachers and students and (2) to increase awareness about the relationship between noise and voice inside the classrooms. Results: The WVHPP was found to be statistically associated with a decrease in the fundamental frequency, standard deviation of the fundamental frequency, sound pressure levels, and SPL standard deviation among both pupils and their teacher. However, there was no statistically significant effect on cepstral peak prominence smoothed. Conclusion: The three-week WVHPP was found to have a significant impact on several acoustic parameters, such as the fundamental frequency and sound pressure levels. These findings highlight the potential of the WVHPP as an effective intervention for improving the vocal health of both teachers and students. However, the lack of a significant effect on cepstral peak prominence smoothed suggests that further research is needed to fully understand the impact of the WVHPP on voice quality.
Objetivo: Determinar el efecto en los parámetros de voz de los alumnos y su profesora de un Programa de tres semanas de Promoción de la Salud Vocal en el lugar de trabajo en un entorno escolar. Métodos: Estudio longitudinal con una fase de diseño y una fase piloto. Se utilizaron grabaciones de voz de habla conectada para recopilar información sobre el funcionamiento de la voz antes y después de la implementación del programa. El programa de promoción de la salud vocal en el lugar de trabajo se implementó con dos propósitos: (1) Reducir las condiciones ruidosas dentro de las aulas que pueden causar una producción de voz a alta intensidad, lo que se ha encontrado asociado con trastornos de la voz entre profesores y estudiantes; y (2) Aumentar la conciencia sobre la relación entre el ruido y la voz dentro de las aulas. Resultados: Se encontró que el Programa de Promoción de la Salud Vocal en el lugar de trabajo estaba estadísticamente asociado con una disminución de la frecuencia fundamental, la desviación estándar de la frecuencia fundamental, los niveles de presión sonora y la desviación estándar de la presión sonora, tanto en los alumnos como en su profesor. Sin embargo, no hubo un efecto estadísticamente significativo en la prominencia del pico cepstral suavizado. Conclusión: Se encontró que el programa de tres semanas tenía un impacto significativo en varios parámetros acústicos, como la frecuencia fundamental y los niveles de presión sonora. Estos hallazgos destacan el potencial del programa como una intervención eficaz para mejorar la salud vocal tanto de profesores como de estudiantes. Sin embargo, la falta de un efecto significativo en la prominencia del pico cepstral suavizado sugiere que se necesita más investigación para comprender completamente el impacto del programa en la calidad vocal.
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(analítico) Las investigaciones de las representaciones sociales de estudiantes acerca de los problemas contemporáneos representan un espacio fundamental de exploración. Este estudio busca analizar las representaciones de estudiantes de educación primaria chilenos y argentinos sobre el conflicto entre los Estados de Chile, Argentina y el pueblo mapuche. La investigación es cualitativa, con un enfoque de teoría fundamentada y los datos recolectados a través de grupos focales en escuelas chilenas y argentinas. El análisis realizado se basa en los procedimientos del paradigma de la codificación, con el motivo de indagar de manera procesual y estructural las representaciones sociales. Los resultados revelan el rol que otorgan los estudiantes a la enseñanza de la historia. Las conclusiones sostienen que la enseñanza de la historia no contribuye a la comprensión de este problema.
(analytical) Research on social representations constructed by students in relation to contemporary problems represents a fundamental space for investigative exploration. This study sought to analyze the representations of Chilean and Argentine primary school students regarding the "conflict" between the Chile, Argentina and the Mapuche people. The research was qualitative and used a grounded theory approach. The data was collected through holding focus groups in Chilean and Argentine schools. The analysis involved the use of coding paradigm procedures in order to investigate social representations in a procedural and structural way. The results reveal the role that students give to the teaching of History. The conclusions identify that the teaching of History does not contribute to the understanding of this problem.
(analítico) Este estudo examina o conhecimento sobre as propriedades formais e a função referencial de desenho, escrita e numerais que mães, filhos e filhas (2 anos e meio e 4 anos) apresentados em tarefa de produção conjunta. O método comparativo constante foi utilizado para a construção do sistema de codificação; se analisou mediante provas não paramétricas. As duplas do grupo de 2 anos e meio conversaram sobre a função referencial dos três sistemas, especialmente do desenho. No grupo de 4 anos aumentaram o interesse pela escrita, a consideração das propriedades formais da escrita e dos numerais e as produções independentes de desenho e escrita. O estudo mostrou a produção gráfica conjunta como uma interação educacional na família que estimula a apropriação precoce de sistemas de representação externa.
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AIM:To investigate the current situation of myopia in a primary school in Jinhua city and the intervention effect of knowledge, belief and practice.METHODS: From September to December 2022, a total of 1 482 primary school students who met the inclusion criteria were selected for myopia test and education intervention based on cluster sampling method. The questionnaire was designed based on relevant references. The main contents of the questionnaire include students' general information, low vision and knowledge, belief and practice before and after intervention and prevention of myopia.RESULTS: A total of 1 482 primary school students were investigated and tested, among which myopia was detected out of 657 students, with a myopia rate of 44.33%. Specifically, mild myopia accounted for 54.64%(359); moderate myopia accounted for 23.90%(157); severe myopia accounted for 21.46%(141). A total of 1 468 valid questionnaires were collected before intervention, and 1 457 valid questionnaires were collected after intervention. The overall knowledge rate of myopia prevention and control knowledge before intervention was 62.57%(7348/11744), and it was 81.20%(9465/11656)after intervention, with statistical significance before and after intervention was statistically significant(P<0.001). The behavior attendance rate before intervention was 82.48%(9687/11744), and it was 93.73%(10925/11656)after intervention, with statistical significance comparison before and after intervention(P<0.001).CONCLUSION: The results of this survey showed that the myopia situation of primary students in Jinhua city was not optimistic, and some students were not aware of prevention knowledge and correct behavior before intervention. After intervention, the knowledge, belief and practice of myopia prevention and control have achieved remarkable results.
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@#AIM: To observe the epidemiological characteristics of myopia among primary school students in Xindu District of Chengdu before and after COVID-19 home isolation period(from Jan.-May 2020).<p>METHODS:Cross-sectional study. A total of 10 153 primary school students from grade 1-6(age 6-13, three classes per grade)were selected from four primary schools in Xindu District of Chengdu for three consecutive years(2018-2020), by using a random stratified cluster sampling method. All students' visual acuity and spherical equivalent refraction(SE)were measured, a further cycloplegia optometry was conducted for those whose visual acuity was less than 5.0. The SE was recorded and the prevalence of myopia was calculated. Chi-square test was used to compare the difference of prevalence of myopia between different years. One-way Anova was used to compare the difference of SE among different years.<p>RESULTS: There was statistical difference in prevalence of myopia between the three years(2018: 35.98%, 2019: 36.29%, 2020: 42.52%; χ<sup>2</sup>=39.374, <i>P</i><0.001). The prevalence of myopia among 6-9 years old students increased significantly in 2020(<i>P</i><0.01). They were 2.20 times(6 years old), 2.08 times(7 years old), 1.36 times(8 years old)and 1.24 times(9 years old)of the previous year. Students aged 6-9 years showed an obvious myopic shift in SE in 2020(<i>P</i><0.05). The increases were -0.34±0.76D(6 years old), -0.28±0.84D(7 years old), -0.29±1.41D(8 years old)and -0.18±1.35D(9 years old)than the previous year. The prevalence of myopia and SE remained stable among 10-13 years old students in 2018-2020(<i>P</i>>0.05).<p>CONCLUSION: After the COVID-19 home isolation period, there was a significant myopic shift among students aged 6-9 years old. We should pay more attention to the window period for myopia prevention and control of 6-9 years old.
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Objective@#To investigate the intake of liquid dairy products and identify its influencing factors among the fourth grade students in Nanjing City. @*Methods@#The fourth grade students were selected as the study subjects in Nanjing City using a multi-stage random cluster sampling method in September 2020. Their general information, frequency of liquid dairy product intake one week prior to survey and mean intake amount per time were collected. According to the 2016 Dietary Guidelines for Chinese Residents, weekly intake of liquid dairy products of 2 100 g and greater was defined eligible. Factors affecting the frequency and amount of liquid dairy product intake were identified using multivariable logistic regression analysis.@*Results@#A total of 2 268 questionnaires were allocated and 2 216 valid questionnaires were recovered, with an effective recovery rate of 97.71%. The respondents included 1 199 boys ( 54.11% ) and 1 017 girls ( 45.89% ). The frequency of liquid dairy product intake was (6.41±4.86) times per week, and the median intake amount was 1 250.00 g per week (interquartile range, 1 750.00 g per week). There were 607 students ( 27.39% ) consuming liquid dairy products of 2 100 g and greater a week, and 1 016 students ( 45.85% ) consumed liquid dairy products for 7 times and more a week. Multivariable logistic regression analysis showed that living in urban areas ( OR=1.204, 95%CI: 1.005-1.443 ), knowing nutrition labels ( OR=1.221, 95%CI: 1.021-1.460 ), periodical measurement of body weight (OR=1.486, 95%CI: 1.098-2.011) and restricted intake of sugar-containing drinks ( OR=1.264, 95%CI: 1.005-1.590 ) facilitated the intake of liquid dairy products for 7 times and more a week, and students with periodical measurement of body weight were more likely to consume liquid dairy products for 2 100 g and greater a week ( OR=1.821, 95%CI: 1.240-2.676 ).@*Conclusions@#Inadequate intake of liquid dairy products is found among the fourth grade students in Nanjing City. Residence, awareness of nutrition labels, periodical measurement of body weight, and parental restriction of sugar-containing drink intake affect the intake of liquid dairy products.
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@#AIM: To investigate the prevalence of convergence insufficiency(CI)of primary school children in Nanchong and to analysis its relationship with age, gender and myopia in a school screening study.<p>METHODS: A cross-sectional screening study was used to select students in grades three, four, and five of three primary schools in the urban area of Nanchong from April to June in 2019. They were all performed relevant eye examinations, including slit lamp, fundus examination, vision acuity, refraction, distance and near heterophoria with alternate cover test, near point of convergence(NPC), and near positive and negative fusional vergences. A questionnaire of convergence insufficiency symptom survey(CISS-15)was performed for each participant, and a score of ≥21 was considered as a positive symptom.<p>RESULTS: Of the 4123 students, 2876 students participated in the study. And the data was analyzed using 2571 participants. The average age of the participants was 9.33±0.02(7 to 13)years. The prevalence of <i>CI</i> was 12.4%, and analysis of variance showed no gender difference(χ2=0.479, <i>P</i>=0.489). The <i>CI</i> prevalence among primary third, fourth, and fifth grade students were 12.4%, 11.3% and 13.5%, respectively, and there was no statistically significant difference in the prevalence of <i>CI </i>between grades(χ2=1.97,<i> P</i>=0.374). The prevalence of myopia among students in the third, fourth and fifth grades was 15.1%, 24.0% and 34.5%, respectively, and the difference in the prevalence of myopia between grades was statistically significant(χ2=86.47, <i>P</i><0.01). Of the 641 myopic students, 240(37.4%)were diagnosed as <i>CI</i>, while the <i>CI</i> prevalence of non-myopic students was 4.15%. The difference between the two groups was statistically significant(χ2=489.54,<i> P</i><0.01).<p>CONCLUSION: This study shows that the overall prevalence of convergence insufficiency of primary school students in Nanchong was 12.4%, which was higher than most previous studies. The prevalence of convergence insufficiency in myopic students was significantly higher than that in non-myopic students. There was no statistical difference in the prevalence of convergence insufficiency between different grades and genders.
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Objective To ascertain the short-term effects of traditional Chinese medicine(TCM) auricular magnetic beads application for treatment of poor vision in primary school students. Methods In 2017, a randomized sampling method was adopted in this study.A total of 458 students with a naked eye visual acuity ≤4.9 were screened from a primary school in the jurisdiction.Of them, 230 students were informed by the parent′s informed consent to receive the TCM ear acupoint application, and the remaining 228 students served as the control group. Results The average eyes visual acuity of intervention group was 4.842, increasing to 4.848 or 4.859 after 6 or 12 weeks′ treatment by auricular magnetic bead application.After statistically analysis, there is a significant difference in short-term effect of auricular magnetic bead application on eyesight improvement for primary school students. Conclusion The TCM auricular magnetic bead application proves to have a short-term effect on the poor eyesight of the students, and the operation is simple and safe.It is conducive to improving students′ participation in poor eyesight control and achieving family and school participation in TCM prevention and treatment of myopia.
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Objective To investigate the obesity of primary and secondary school students in Chengdu City, and to analyze the effects of comprehensive intervention. Methods A total of 1 500 children in Jinniu District of Chengdu were selected for health check-ups. Questionnaires were distributed to children and their parents to investigate the incidence of obesity and analyze the risk factors. Obese children were randomly divided into a control group and an intervention group. The control group was given routine health education while the intervention group was given comprehensive management intervention. The obesity indicators and compliance were compared between the two groups. Results Among 1 500 children, there were 192 obese children. Multivariate logistics regression analysis showed that males (OR=1.881, P<0.05), fetal macrosomia (OR=1.790, P<0.05), premature infants (OR=2.261, P<0.05), parental obesity (OR=1.774, P<0.05), eating midnight snack (OR=3.943, P<0.05), fast eating speed (OR=2.980, P<0.05), addiction to meats such as pigs/chickens/bovines (OR=1.956, P<0.05), addiction to fried foods (OR=1.662, P<0.05), addiction to desserts (OR=2.361, P<0.05), liking eating sugary drinks (OR=1.547, P<0.05), lack of exercise (OR=2.428, P<0.05) and parental cognition towards body shape of children (OR=14.629, P<0.05) were risk factors for childhood obesity. After intervention for risk factors of obesity, the levels of obesity indexes in the two groups were significantly decreased compared with those before intervention (P<0.05), and the levels of obesity in the intervention group were significantly lower than those in the control group (P<0.05). The rate of compliance in the intervention group was significantly higher than that in the control group (P<0.05). Conclusion Male gender, fetal macrosomia, premature infants, parental obesity, eating midnight snack, fast eating speed, addiction to meats such as pigs/chickens/bovines, fried foods, desserts and sugary drinks, lack of exercise and parental thinking of moderate body shape of children were risk factors for obesity in primary and secondary school students in Chengdu. The implementation of comprehensive interventions can help obese students lose weight.
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@#AIM: To understand the prevalence of refractive state of primary school students in Haicheng district, Beihai city.<p>METHODS: Cross-sectional study and cluster sampling were used. A total of 30 716 students aged 6 to 14 from 15 primary schools in Haicheng district, Beihai city, who had taken physical examination from October 2019 to January 2020, were selected for visual acuity and pupil diopter. SPSS17.0 statistical software was used for data analysis.<p>RESULTS: In the eyes of the 15 primary schools monitored in this study, 30 716 cases had mild myopia(29.62%), 0.50D < astigmatism < 2.00D(25.43%), metropia(21.05%)and mild hyperopia(15.85%). With the growth of age, the proportion of emmetropia and farsightedness declined as awhole. The proportion of myopia is on the rise. A total of 1 894 cases of wearing glasses 3 788 eyes. The rate of poor vision was 23.30%, and the rate of qualified correction of frame glasses was 64.57%. Compared with the left eye, the difference was statistically significant, and the <i>P</i>50 of the right eye was more negative than that of the left eye. The equivalent spherical mirror was compared between boys and girls. The difference was statistically significant, and the <i>P</i>50 of equivalent spherical mirror of girls was more negative than that of boys.<p>CONCLUSION: With the growth of age, the proportion of mild hyperopia and squarely eyes decreases year by year; The proportion of myopia increases year by year; Among the students with poor eyesight, the number of those who regularly wear glasses is small; However, after wearing glasses, there are still some students whose glasses are not up to standard. The refractive state of the right eye is more negative than that of the left eye; Female students tend to be more negative than male students in the refractive state.
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Objective To investigate the correlation between iron metabolism index and intelligence development of Dongxiang and Han students in Dongxiang county and Lanzhou city of Gansu province.Methods A total of 396 students aged from 6 to 11 years old were randomly selected for venous blood collection from two primary schools with Dongxiang and Han children in Dongxiang county and Lanzhou city.Blood routine and serum iron metabolism indicators were detected and iron metabolism indicators from different ethnic groups were analyzed.Students diagnosed with iron deficiency anemia(IDA) named as IDA group,and students without IDA who had similar background were enrolled in the control group.The correlation between iron metabolism index and intelligence quotient was analyzed.Results The ferritin level of Dongxiang students (51.81 μg/L)was lower than that of Han students(65.73 μg/L),and total iron binding capacity of students in Dongxiang county [(65.04 ± 6.68) μ mol/L] was higher than that of students in Lanzhou city [(59.92 ±5.91) μmol/L].The transferrinsaturation of students in Dongxiang county [0.23 (0.19 ～ 0.30)] was lower than that of students in Lanzhou city[0.26(0.20 ～0.32)].The differences were statistically significant(P ＜0.05).Analysis of multiple linear regression showed that ferritin and serum iron were correlated to intelligence quotient score of the IDA students (P ＜ 0.05).Conclusion Ferritin and serum iron are associated with primary school students' intelligence quotient.Religious practice,regional economic and cultural level have a certain influence on iron metabolism of local primary school students.It is very important to strengthen the supplement of dietary iron in primary school students in Dongxiang County and reduce the prevalence of iron deficiency.
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@#AIM:To investigate the prevalence of myopia among primary school students in Xindu district of Chengdu, and analyze the epidemiological characteristics and related influencing factors. <p>METHODS: By means of stratified cluster random sampling survey, the first to sixth grade students from 4 primary schools in Xindu district of Chengdu were selected for ophthalmology examination and questionnaire survey, and the statistical analysis was carried out with SPSS21.0 software. <p>RESULTS: There were 3 324 students participated in the survey, 1 124 students with myopia, and the prevalence rate of myopia was 33.81%. The single factor analysis of myopia found that different genders, different ages, different grades, eating fruits and vegetables and drinking milk frequency, parents supervise and remind students to use eye habits frequently, reading and writing light at home, continuous homework and reading time, sleep time, extracurricular activity time, frequency of going outdoors or doing eye exercises during recess, lying reading or reading in a wobbly car. The prevalence of myopia was different among the students with reading and writing posture and their parents with myopia, and the difference was statistically significant. The difference is statistically significant(<i>P</i><0.05). Multivariate regression analysis showed that grade, sex, parental supervision and warning eye habits, light of reading and writing at home, continuous homework and reading time, extracurricular time, lying reading or reading in a wobbly car, Whether the posture of reading and writing is correct or not, the condition of myopia of parents is the independent factor of myopia, among them, parents' supervision and reminding of eye habit are protective factors of myopia, and the other indexes are risk factors. <p>CONCLUSION: Juvenile myopia is related to many factors such as environment, heredity and so on. It is necessary to take appropriate measures as soon as possible to prevent its occurrence and development.
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Objective To analyze the relationship between sleep duration, screen viewing time, and the prevalence of overweight/obesity among primary school students in Xuzhou. Methods Using a cluster sampling method, a total of 3 228 students (including 1 679 boys and 1 549 girls with an average age of 10.78±0.69 years) from grade one to six from 10 primary schools in Xuzhou underwent interview using a self?designed questionnaire containing basic characteristics, sleep duration, and screen viewing time. Data on height and weight were also collected. The relationship between sleep duration, screen viewing time, and overweight/obesity was analyzed using a logistic regression analysis. Results The prevalence rates of overweight among boys and girls were 16.56% and 11.94%, respectively (χ2=13.59, P<0.05). The prevalence rates of obesity among boys and girls were 14.47% and 10.07%, respectively (χ2=14.01, P<0.05). In total, 74.41% students reported a lack of sleep; the average sleeping time was (9.24±1.07) h. The average sleeping time among boys was (9.35 ± 1.12) h and among girls was (9.13 ± 1.03) h. The difference in sleep duration between boys and girls was significant (t=5.79, P<0.05). The differences in sleep duration and overweight/obesity were significant between both boys (χ2=18.62, P<0.05) and girls (χ2=21.14, P<0.05). Regarding screen viewing time, 17.29% of students spent more than 2 hours per day viewing a screen. The difference in screen viewing time between boys and girls was significant (Z=3.02, P=0.014). The proportion of children with screen viewing time of more than 2 h/d among overweight/obese and healthy weight male students was 29.50% (82/278) and 22.56% (316/1401), respectively, which was significantly different (χ2=6.18, P=0.01). However, there was no significant difference when examining the same groups among girls (12.98% (24/185;obese/overweight) vs . 9.97% (136/1364; healthy weight); χ2=1.59, P=0.21). After adjusting for parental obesity, eating sweets, and physical activity, logistic regression analysis showed that students who had a sleep duration less than 10 h/d had an odds ratio of 1.4 (95% CI: 1.15-1.71), the odds ratio for boys and girls was 1.56 (95% CI: 1.13-2.14) and 1.69 (95% CI: 1.15-2.46). The students who had a screen viewing time of more than 2 h/d had an odds ratio of 1.14 (95% CI: 1.05-1.80); the odds ratio for boys in this group was 1.18 (95% CI: 1.03-1.67). Conclusion Short sleep duration is a risk factor for being overweight/obese in both boys and girls. However, long screen viewing times were associated with being overweight/obese only in boys.
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Objective To explore the impact of family education methods and parental rearing or not on the psychological problem tendency of primary school students.Methods The mental health test (MHT) was used on getting mental health data of the 2 838 primary school students from Dongguan city.Results (1) The results of MHT showed that 94.28％ of primary school students had no psychological problems,the tendency rate of psychological problems was 4.29％,and 1.43％ of them were suffering from serious psychological problems.Learning anxiety,physical symptoms and allergy tendency were more prominent.(2) The total MHT scores of primary school students with authoritarian,democratic,permissive and neglected family education methods were (34.84±14.58),(31.04±13.60),(35.19±12.82) and (41.19±13.10)respectively.There was no statistically significant difference in the terrorist tendency dimension scores of primary school students with different education methods (F=2.33,P=0.054),and the differences in the MHT total score and other dimensions were statistically significant (F=4.35-16.88,P＜0.01).(3) There were statistically significant differences in the scores of the total score of psychological problem tendency,dimensions of learning anxiety,anxiety to people,allergy tendency and impulse tendency of primary school students who were parental rearing or not (t=2.09-3.67,P＜0.05).However,there was no statistically significant difference in the dimensions of loneliness tendency,self-accusation tendency,physical symptoms and terrorist tendency (P＞0.05).Conclusion Family education methods and parenting styles has a impact on the mental health of primary school students.
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AIM: To estimate the pooled prevalence of myopia among primary school students in mainland China during 1980- 2013. Myopia had become a growing public health issue, with high prevalence rates in mainland China, particularly among children. However, we still had no population-based nationwide studies of the prevalence of myopia among primary school students in recent years. METHODS: Wanfang, Chinese National Knowledge Infrastructure and PubMed databases were searched independently until Dec. 31, 2013 to identify relevant articles. Data from the eligible articles were extracted by two reviewers. All of the data analyses were conducted using Meta-Analyst software (version 3. 13, USA). RESULTS: Thirty - seven eligible studies published between 1980 and 2013 were selected with a total of 245248 individuals. The pooled prevalence of myopia among the included individuals was 26. 5% (95% CI: 21. 8% -31. 7%). The prevalence of myopia increased with age (from 8. 4%at 6-8y to 57. 4% at 12-14y). CONCLUSION: The pooled prevalence of myopia among primary school students in mainland China was much higher than that of western countries or regions. The prevalence of myopia increased with age among primary school students. This study should be valuable for myopia prevention and treatment in mainland China.
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AIM:To evaluate the poor vision condition and analyze the myopia etiological factor in primary school He'xi district of Sanya. METHODS: A cohort of 1 218 subjects were recruited randomly from grade 1~6 of two primary schools. Visual activity test, dioptroscopy and risk factor questionnaire were evaluated. RESULTS: The prevalence of poor vision was 29. 55%. The incidence of myopia increased with grade, and was significantly higher in girls than that in boys. The outdoor activity time of myopic pupil ( 7. 25 ± 5. 35h/wk ) was significantly lower than emmetropic pupil (11. 86±6. 65h/wk) ( P CONCLUSION: The increase of myopia incidence is closely related with sparing outdoor activity and excess usage of electronic product.
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Introducción: Estudios epidemiológicos han demostrado que la hipertensión arterial sistémica (HTAS) puede comenzar desde los primeros años de vida. El objetivo de este estudio fue determinar la prevalencia de HTAS y factores de riesgo (FR) en escolares de una comunidad en el noroeste de México. Material y métodos: Estudio polietápico, aleatorizado en escolares sanos de 6 a 12 años de edad. Medición de presión arterial (PA) y variables antropométricas (VA). Se consideró HTAS cuando la PA con relación a talla fuera ≥ al porcentil 95 en tablas locales (TL) y Task Force (TF). Evaluación de los FR mediante cuestionario aplicado a padres y alumnos. Resultados: En 684 niños, 51.3% mujeres y 46.8% hombres, la prevalencia de HTAS según TF fue de 7.74% y 2.63% con TL. Se observó una asociación entre PA con VA. El peso y la edad son FR para PAS, en cambio el peso sólo para PAD. Conclusiones: La prevalencia de HTAS fue similar a reportes en la literatura según TL, pero se encuentra aumentada según el TF. Hubo correlación directa entre la PA con VA y resultaron como FR para HTAS el peso y edad.
Introduction:Epidemiological studies have shown that arterial hypertension can start since the first years of life. The aim of this study was to determine the prevalence of hypertension and risk factors (RF) among school-age children from one community in the northwest of Mexico. Material and methods: A poly-stage, randomized study was carried out in healthy pupils aged 6 to 12 years old. Blood pressure (BP) and anthropometrical variables were measured. Hypertension was considered whenever BP in relation to body height was ≥ 95 percentil in local tables (LT) and task force (TF). RF was assessed using a questionnaire applied to parents and students. Results: In 684 children, 51.3% females and 46.8% males, the prevalence of hypertension according to TF was 7.74% and 2.63% according to LT. An association between hypertension and anthropometrical variables was observed. Weight and age are RF for systolic hypertension, while weight was RF for diastolic hypertension. Conclusion: Hypertension prevalence according to LT was similar to the one reported in other studies; however, it is increased according to TF. There was a direct correlation between hypertension and anthropometrical variables. Weight and age were RF for hypertension.
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Although the past few decades have seen rising incomes and increased government attention to rural development, many children in rural China still lack regular access to micronutrient-rich diets. Insufficient diets and poor knowledge of nutrition among the poor result in nutritional problems, including irondeficiency anaemia, which adversely affect attention and learning of students in school. Little research has been conducted in China documenting the prevalence of nutritional problems among vulnerable populations, such as school-age children, in rural areas. The absence of programmes to combat anaemia among students might be interpreted as a sign that the Government does not recognize its severity. The goals of this paper were to measure the prevalence of anaemia among school-age children in poor regions of Qinghai and Ningxia, to identify individual-, household- and school-based factors that correlate with anaemia in this region, and to report on the correlation between the anaemic status and the physical, psychological and cognitive outcomes. The results of a cross-sectional survey are reported here. The survey involved over 4,000 fourth and fifth grade students from 76 randomly-selected elementary schools in 10 poor counties in rural Qinghai province and Ningxia Hui Autonomous Region, located in the northwest region of China. Data were collected using a structured questionnaire and standardized tests. Trained professional nurses administered haemoglobin (Hb) tests (using Hemocue finger prick kits) and measured heights and weights of children. The baseline data showed that the overall anaemia rate was 24.9%, using the World Health Organization’s blood Hb cut-offs of 120 g/L for children aged 12 years and older and 115 g/L for children aged 11 years and under. Children who lived and ate at school had higher rates of anaemia, as did children whose parents worked in farms or were away from home. Children with parents who had lower levels of education were more likely to be anaemic. The anaemic status correlated with the adverse physical, cognitive and psychological outcomes among the students. Such findings are consistent with findings of other recent studies in poor, northwest areas of China and led to conclude that anaemia remains a serious health problem among children in parts of China.
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Objective To investigate the effects of aerobic exercises on the pulmonary ventilation function and electrocardiac activity of simple obesity primary school students. Methods 30 simple obesity boy students were recruited for this study. All the subjects participated in a 12-week aerobic training program (40 min/day,4 days/week). Body composition,pulmonary function and electrocardiogram were tested at the beginning and the end of the training program. Results Decreases of fat mass and body fat ratios were found in response to the exercise stimulus (P<0.05). Free-fat mass(FFM) significantly increased. No statistically significant differences of waist hip ratio (WHR) were found. Among the pulmonary ventilation function indexes,MVV、FEV_1、V_(50)/Ht and PEFR increased significantly (P<0.05, P<0.01). Among the EEG indexes,QTd value and QTcd value decreased significantly (P<0.05,P<0.01). Conclusion Aerobic exercises could improve the pulmonary ventilation function of simple obesity primary school students,and had favorable regulations on electrocardiac activity.
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Objective To understand the psychological health status of the middle and primary school students,and to provide some advice of their mental health care.Methods In 11 611 middle and primary school students in 18 schools in Maojian area of Shiyan city,the students,teachers and parents at 5 schods were investigated a randomely,targets were examined by Achenbach Child Behavior Checklist(CBCL),Pupil Rating Scale Revised Screening for Learning(PRS),Conner's Parent Symptom Questionnaire(PSQ)and Conner's Teacher Rating Scale(TRS)and self-established questionnaires for general information.Results The investigation demonstrated:89.29% of students possessed very promising dreams and sublime pursuits,and had correct outlook on life and values;10.71% of students had comparatively severe psychological problems.The major problems appeared to be indefinite purpose of study,shorted of mental endurance and severe impulsivetrend.Moreover,an-xiety,emotion instability and solitary trend caused indifference,sheepish ness and difficulty in their communication.Conclusion Schools,families and society pay close attention to students,mental health and help the youngsters develop in a healthily psychdogical way.