School-based Cross-sectional Study Research Articles

Use of ICHD-3rd diagnostic criteria in determining the prevalence of migraine in childhood; school-based cross-sectional questionnaire study

ABSTRACT Objective This study aimed to determine the relationship between migraine prevalence and its diagnostic features in school children. Methods This study was conducted on children aged 10–18 year who were randomly selected from 22 middle and 26 high schools. Questionnaires were prepared in Turkish with demographic (9 items) and headache characteristics (ICHD-3rd-based headache screening questionnaire, 11 items). Results A total of 1450 surveys were properly filled out. Female/male ratio was 798/652 (55%÷45%) and the mean age was 14.4 years ± 2.1. 96.4% of the population in this study. According to the criteria of headache attack number (≥4 attacks), character (pulsatile) and duration (≥1 h), the prevalence of migraine in the studied population was 23.1%. Conclusion Population-based studies are important because they provide information on diagnosing migraine, which is a public health priority in childhood, and contribute to creating the world migraine atlas. Although additional diagnostic clues are needed to determine the prevalence of migraine in childhood, we still widely use headache screening questionnaires based on ICHD-3rd.

Undernutrition and associated factors among school-age children in Wolaita Zone, South Ethiopia: a comparative cross-sectional study

BackgroundNutritional deficiencies in school-age children are a public health concern, especially in resource-limited countries. A school feeding program involves the provision of food on-site or taken home to reduce hunger. It is implemented in several developing nations; however, little is known about the association of school feeding programs with the nutritional status of school-age children in the study area.ObjectivesThe study aimed to determine the magnitudes and associated factors of undernutrition among school-age children with school feeding programs (SFPs) and non-school feeding programs (N-SFPs) in Kindo Didaye woreda, South Ethiopia.MethodsA school-based comparative cross-sectional study was conducted in Kindo Didaye district from May to June 2023. A total of 612 participants were included in the study. The data were collected from each selected student's parents by using a structured interviewer-administered questionnaire. The weight and height of the children were measured, and a household dietary diversity assessment was conducted. The data were analyzed using SPSS version 25. A binary logistic regression analysis was carried out. A p-value of <0.05 and 95% confidence interval (CI) were used to establish a statistically significant association.ResultsThe magnitude of undernutrition among the school-age children was 38.9%: 43.3% in the children from the SFP schools and 34.5% in the children from the N-SFP schools. Stunting was 24.1% among the children in the schools with SFPs and 16% among the children in the N-SFP schools, whereas thinness was 33.8% among the children in the SFP schools and 25.6% among the children in the N-SFP schools. The children who were in the older age group [adjusted odds ratio (AOR) = 4.4, 95%CI; 2.22–8.85], consumed less than three meals per day at home (AOR = 6.03; 95%CI 3.9–9.3), and did not eat breakfast at all before going to school (AOR = 3.5; 95%CI 1.15–10.76) were more likely to become undernourished. The children whose fathers received secondary and above education (AOR = 0.52; 95% CI (0.27–0.971) had lower odds of becoming underweight.ConclusionThe magnitude of undernutrition was high in the current study. Existing interventions that work to improve the nutritional status of school-age children should be strengthened. Children should consume any type of food as breakfast at home before going to school regardless of the presence of school feeding programs and at least three times a day.

Refractive errors in Tianjin youth aged 6–18 years: exploring urban–rural variations and contributing factors

PurposeRefractive errors, particularly myopia, constitute a significant global public health concern, contributing to morbidity and disability. A more comprehensive understanding of the determinants of refractive errors and the differences between urban and rural areas is essential to develop effective preventive measures for youth. This study aimed to compare the prevalence and risk factors of refractive errors among youth in urban and rural Tianjin, China.MethodsThis school-based cross-sectional study was conducted in 2022. Elementary, middle, and high school students aged 6–18 years from both urban and rural areas of Tianjin were included. All participants underwent visual acuity testing and refractive measurement and completed comprehensive questionnaires.ResultsA total of 346,146 participants (176,628 boys) were included in this investigation (50.36% for urban and 49.64% for rural, respectively). Myopia, hyperopia, astigmatism, and anisometropia were present in 56.8, 9.7, 56.64, and 21.3% of urban students, respectively. Similarly, rural students had a prevalence of 57.6, 11.5, 56.48, and 22.0% for the respective conditions. Compared to rural students, after adjusting for age, sex, and other significant variables, urban students were 1.05 times more likely to have myopia (95% CI: 1.03–1.07, p < 0.0001), 0.71 times less likely to have hyperopia (95% CI: 0.69–0.73, p < 0.0001), and 1.02 times more likely to have astigmatism (95% CI: 0.69–0.73, p < 0.0001). There was no significant association between anisometropia and residence (OR: 1.00, 95% CI: 0.98–1.02, p = 0.9850). Sociodemographic and physiological factors contribute to the disparities in the prevalence of refractive errors between urban and rural areas. Age, increased near-work activities, and Decreased outdoor time were identified as risk factors for myopia, astigmatism, and anisometropia. Conversely, the absence of a parental history of refractive errors emerged as a protective factor for myopia and astigmatism among students. Lower parental education levels were negatively correlated with the risk of myopia and anisometropia in their children. Specifically, the lower the parental education, the greater the risk of myopia in their offspring. For urban students only, lower parental education was associated with an increased risk of astigmatism.ConclusionCrude prevalence estimates May not accurately reflect the true burden of refractive error due to confounding factors such as age and sex. Accounting for these factors revealed that urban students were more likely to have myopia and astigmatism but less likely to have hyperopia compared to their rural counterparts. These disparities highlight the importance of considering geographical variations when implementing strategies for myopia control and prevention.

Tobacco use and khat chewing among adolescents in Yemen: a large-scale school-based cross-sectional study

ObjectiveThe present study sought to assess the prevalence and determinants of tobacco use (cigarette smoking and shisha use) and khat chewing among Yemeni adolescents, and to evaluate their knowledge and attitudes toward these habits.MethodsThis school-based cross-sectional study was conducted among 13 to 19-year-old students attending middle/high schools (both private and public) across five main cities in Yemen. Data were collected using self-administered questionnaires comprising questions/items related to sociodemographic data, cigarette smoking, shisha use, khat chewing, and knowledge on and attitudes toward these habits. Bivariate and multivariate analyses were used to explore the most determinant factors.ResultsA total of 7505 students were recruited from 42 schools across five major cities in Yemen. The prevalence rates of khat chewing, cigarette smoking, and shisha use were 42.4%, 6.8%, and 19.3%, respectively. Compared to females, male subjects reported significantly higher prevalence of khat chewing (51.4% vs. 23.5%, p < 0.001), shisha use (20.3% vs. 17.2%, p < 0.01), and cigarette smoking (8.8% vs. 2.6%, p < 0.001). Male gender, older age, poor knowledge, khat chewing, parents’ low education level, and parents’ and peers’ smoking habits were significant determinants of adolescents’ cigarette smoking status. Private education, male gender, older age, poor knowledge, parents’ low education level, and parents’ and peers’ khat chewing habits were significant determinants of adolescents’ khat chewing status. The participant’s knowledge of and attitudes toward tobacco use and khat chewing were inadequate.ConclusionThe prevalence of khat chewing, shisha use, and to lesser extent cigarette smoking among Yemeni adolescents is high that needs immediate intervention. The results highlight the urgent need to implement prevention strategies to tackle these habits among the youth in Yemen.

Benchmarking the Determinants of Nutritional Status among Community Schools’ Children in Nepal

The government of Nepal initiated the Mid Day Meal Program (MDMP) to reduce hunger and increase educational outcomes, including health status. However, limited studies have been conducted on these issues covering the nutritional status of students at the lower basic level at community schools in Nepal. The main objective of the study is to determine the factors associated with malnutrition among children from community schools in Nepal. A school-based cross-sectional study was conducted in 98 (46 basic and 52 secondary) community schools from 44 municipalities in Nepal. Altogether, 2727 students participated in the questionnaire survey and anthropometric measurement. Data collection was performed on May 10-31, 2023. WHO Anthro plus and LMS (Lambda Mu and Sigma) parameters were used: weight for age for national health and nutrition survey recommended by CDC/National Center for Health Statistics for ages older than ten years to analyze nutritional status, including z scores. Descriptive analysis, including inferential analyses such as the chi-square test and logistic regression, was performed using IBM SPSS Statistics v25. The prevalence of weight-for-age Z-score[WAZ], height-for-age Z-score [HAZ], and body mass index-for-age Z-score [BAZ] were 72%, 75%, and 82%, respectively. Students with z-scores outside the range of ±2 were classified as malnourished. Of them, 27.3%, 23% and 16.6% were assessed as underweight, stunted and thin, respectively. Students' sociodemographic characteristics such as age, asex, family size and type, source of income, wealth status were significantly associated with malnutrition, while age group, gender, wealth status, residence setting, and geographical location were noted as significant predictors of nutritional status. The study found no statistical relationship between school feeding and good nutrition, questioning the quality of the midday meal program. The study concludes that existing school-based nutritional interventions need to be re-evaluated and re-designed since it is less potent to minimize malnutrition among students substantially. Policymakers could consider these findings when planning and implementing nutrition-related policies and programs.

Prevalence and associated risk factors of stunting, wasting/thinness, and underweight among primary school children in Kandahar City, Afghanistan: a cross-sectional analytical study

BackgroundUndernutrition, which includes stunting, wasting, and underweight, is a global problem, especially among children of low- and middle-income countries. To our knowledge, this study is first of its type from Afghanistan. Its main objectives were to estimate the prevalence and associated risk factors of stunting, wasting/thinness, and underweight among urban primary school children in Kandahar city of Afghanistan.MethodsThis school-based cross-sectional study was conducted among 1205 primary school children aged 6–12 years during a period of six months (October 2022–March 2023). Anthropometric measurements and other data were collected from all the participants. Data were analyzed by using descriptive statistics, Chi square test (using crude odds ratio or COR), and multivariate logistic regression (using adjusted odds ratio or AOR).ResultsAmong the 1205 enrolled government school students, 47.4%, 19.5%, and 25.6% had stunting, wasting/thinness, and underweight, respectively. Statistically significant factors associated with stunting were age group 6–9 years (AOR 1.3, 95% CI 1.1–1.7), being girl (AOR 2.3, 95% CI 1.8–3.0), poverty (AOR 2.2, 95% CI 1.5–3.2), large family (AOR 3.0, 95% CI 2.4–3.9), illiterate mother (AOR 1.6, 95% CI 1.0–2.6), jobless head of the family (AOR 3.3, 95% CI 2.3–4.8), and skipping breakfasts (AOR 1.7, 95% CI 1.2–2.3). Main factor associated with wasting/thinness were age group 6–9 years (AOR 30.5, 95% CI 11.8–78.7), skipping breakfasts (AOR 22.9, 95% CI 13.9–37.8), and history of sickness during the past two weeks (AOR 17.0, 95% CI 6.6–43.8). Also, main factors associated with underweight were age group 6–9 years (AOR 2.6, 95% CI 1.6–4.1), skipping breakfasts (AOR 2.6, 95% CI 1.8–3.6), and poor sanitation (AOR 1.9, 95% CI 1.1–3.2).ConclusionsStunting, wasting/thinness, and underweight are highly prevalent among primary school children (both girls and boys) in Kandahar city. It is recommended that local government (Afghanistan Ministry of Education and Ministry of Public Health) with the help of international organizations and donor agencies should implement comprehensive school-based feeding programs especially for girls. Health and nutrition education programs should be conducted with emphasis on nutrition of children aged 6–9 years as well as importance of healthy breakfast and good sanitation.

Cut-off points of adiposity indices associated with insulin resistance in Brazilian postpubertal adolescents

ObjectivesThis study aims to establish cut-off points for lipid accumulation product and tri-ponderal mass index to identify insulin resistance (IR) in Brazilian postpubertal adolescents. MethodsWe conducted an analysis of postpubertal adolescents enrolled in the national school-based cross-sectional study of cardiovascular risks in adolescents (ERICA-BRAZIL) from February 2013 to November 2014. IR was defined by homeostatic model assessment index for IR values ≥2.32 for girls and ≥2.87 for boys. The analysis involved calculating the area under receiver operating characteristic curves, sensitivity values, specificity, positive and negative predictive values, and positive and negative likelihood ratios to determine reference values of indices with optimal performance. ResultsThe sample was comprised of 14 026 adolescents, with 25.3% (95% confidence intervals: 24.6%–26.1%) exhibiting IR, more prevalent among girls and overweight individuals. The ideal lipid accumulation product cut-off points associated with IR were 13.5 for the total population, 13.8 for male adolescents, and 13.5 for girls. Regarding tri-ponderal mass index, the optimal cut-off values for identifying IR were 14.1, 13.9, and 14.5 kg/m³ in the general sample, boys, and girls, respectively. ConclusionsThis study establishes cut-off points for adiposity indices, demonstrating their effectiveness in screening for IR in postpubertal Brazilian adolescents.

Anisometropia and its correction in children in northwest China: A study based on autorefraction data.

To investigate the prevalence and correction of anisometropia among primary school children in northwestern China. A cross-sectional school-based study was conducted in Shaanxi Province. Visual acuity (VA) and autorefraction without cycloplegia were assessed in all participants, and some received axial length (AL) measurements. Anisometropia was categorised based on spherical equivalent (SE), cylindrical (CYL), and AL. The prevalence of anisometropia and refractive correction across different ages and sexes, and correlations between ocular parameters, were analysed. The study included 29 153 children aged 6-12 (mean age 9.52 ± 1.73 years) for VA and autorefraction measurements, and 1176 children for AL measurements. The prevalence of myopia (SE ≤ -0.50 D), hyperopia (SE ≥ +0.50 D), and anisometropia (interocular SE difference ≥1.00 D) was 65.26%, 15.09%, and 16.50%, respectively. Anisometropia severity, based on SE (χ2 = 443.758, p < 0.001), CYL (χ2 = 41.669, p < 0.001), and AL (χ2 = 95.505, p < 0.001), increased with age, with no significant differences between sexes. Interocular SE difference correlated with interocular spherical power (r = 0.806, p < 0.001), CYL (r = 0.21, p < 0.001), and AL (r = 0.365, p < 0.001). Additionally, interocular CYL difference was positively correlated with interocular AL difference (r = 0.16, p < 0.001). Despite the high prevalence of anisometropia, less than 30% of affected children received refractive correction. Anisometropia of SE, CYL, and AL increased progressively with age. Despite the elevated prevalence of anisometropia, the utilisation of refractive correction remained strikingly low.

Health literacy and its determinants among school-going children: a school-based cross-sectional study in Nepal.

Limited health literacy is linked to unhealthy behaviors, adverse health outcomes, poor quality of life and financial burdens on society. However, little is known about the level of health literacy, especially among school-going children. This cross-sectional study assesses health literacy levels and their determinants in 354 school children from Kathmandu Metropolitan City, utilizing a multi-stage cluster sampling method. The 10-item Health Literacy for School-Aged Children was used to measure the student's literacy levels. Bivariate analysis and multivariable logistic regression at the significance level of 0.05 were performed to determine factors associated with limited health literacy. The majority of participants (76.6%) had moderate health literacy, while 13.8% had a high level and 9.6% had a low level of health literacy. Students from nuclear families had lower odds [adjusted odds ratio (aOR): 0.4; 95% CI: 0.2-0.8] of having limited health literacy. Students whose mother education was up to secondary school (aOR: 10.1; 95% CI: 1.3-78.9), students with pre-existing mental health conditions (aOR: 3.7; 95% CI: 1.4-9.6) and students with unsatisfactory health status (aOR: 3.9; 95% CI: 1.5-10.5) had higher odds to have limited health literacy. These results suggest the importance of prioritizing school health promotion and education activities for students with pre-existing mental health conditions and mothers with low educational attainment. Implementing peer support group programs for children with mental illnesses, mobilizing school health professionals and introducing interventions such as vocational training of mothers can collectively improve health literacy among school-going children.

A cross-sectional study to assess the prevalence and contributing factors of anaemia in private school children in Bengaluru

Background: Anaemia is defined as an Hb concentration below the diagnostic reference range in children. Most school-aged children have anaemia, which is a common clinical disease. The effects of anaemia in school-age children include decreased resistance to disease, greater susceptibility to infection, poorer physical development, and poor academic performance. Consequently, the current study aimed to investigate the prevalence of anaemia among Bengaluru private school students. This involved being aware of the contributing elements or causes of anaemia, as well as teaching schoolchildren about the disease’s complications and prevention. Methods: A school-based cross-sectional study was conducted among children studying in private school from the 3rd to 8th standards in Bengaluru urban north division Karnataka state over a period of one year (March 2021 to March 2022). A total of 86 children were selected using a convenient sampling method. Results: The overall prevalence of anaemia among school-going children was found to be (20.9%). Prevalence of anaemia was strongly significant among variables like; enlarged spleen or liver, pallor skin, splenomegaly and hepatomegaly, mizāj ‘ām, chronic infection, pallor mucous membrane of mouth and consumption of milk respectively. Conclusions: Anaemia remains a public health concern in our country. In our study, the overall prevalence of anaemia among school-going children was lower (20.9%) in compression compared to recently published data by (NFHS-5), which showed a prevalence of 65.5% in children in Karnataka.

Association of psoriasis with allergic multimorbidity of asthma, rhinitis, and eczema among adolescents: a cross-sectional study

BackgroundAssociations between psoriasis and allergic diseases (asthma, rhinitis, and eczema) in children have been reported in a limited number of studies, and the association between psoriasis and multimorbidity (co-occurrence) of allergic diseases remains unclear. Hence, this study aimed to assess the association between psoriasis and the co-occurrence of asthma, rhinitis, and eczema in adolescents.MethodsThis school-based cross-sectional study enrolled adolescents (n = 3,864) aged 11–14 years. Parents completed a questionnaire on doctor-diagnosed psoriasis as well as symptoms and clinical history of asthma, rhinitis, and eczema. Eight nonoverlapping groups comprising single and co-occurring current (past 12 months) asthma, rhinitis, and eczema were identified. A multinomial logistic regression model was used to estimate the adjusted odds ratios (aOR) and 95% confidence intervals (CI).ResultsIn the analytical sample (n = 3,710; 1,641 male and 2,069 female participants), 3.5% reported doctor-diagnosed psoriasis, and 15.7%, 15.0%, and 10.3% had current asthma, rhinitis, and eczema symptoms, respectively. Doctor-diagnosed psoriasis was associated with “asthma only” (aOR = 2.11, 95% CI: 1.15–3.89), “eczema only” (6.65, 4.11–10.74), “asthma + eczema” (5.25, 2.36–11.65), “rhinitis + eczema” (3.60, 1.07–12.15), and “asthma + rhinitis + eczema” (7.38, 2.93–18.58). Doctor-diagnosed psoriasis was not statistically significantly associated with “rhinitis only” (1.42, 0.71-–2.84) and “asthma + rhinitis” (1.78, 0.69–4.56).ConclusionOur findings indicate that psoriasis is associated with the co-occurrence of allergic diseases among adolescents. However, further studies are required to investigate which biological mechanisms may be shared between psoriasis and allergic diseases.

Associations of 24-hour movement behaviors with emotional and behavioral problems among Chinese adolescents.

The role of adherence to the recommendations for 24-hour movement behaviors (24-HMB), including physical activity (PA), screen time (ST), and sleep duration (SLP), in relation to emotional and behavioral problems in Chinese adolescents remains uncertain. This study aimed to investigate these associations and explore potential sex differences. This school-based cross-sectional study included 15,071 Chinese adolescents with a mean age of 14.53 (SD: 1.65) years. Data on emotional and behavioral problems and 24-HMB (including PA, ST, and SLP) were collected. Analysis was performed using general linear mixed models, with additional sex-stratified analyses conducted. The number of 24-HMB recommendations met was negatively associated with total difficulties (β estimate=-0.96, 95% CI: -1.07 to -0.85) and positively related to prosocial behavior (β estimate = 0.41, 95% CI: 0.37 to 0.46) among adolescents. Compared with none of the recommendations met, meeting all recommendations (total difficulties: β estimate=-2.98, 95% CI: -3.41 to -2.55; prosocial behaviors: β estimate = 1.05, 95%CI: 0.87 to 1.24) demonstrated the strongest association with both difficulties and prosocial behaviors, followed by meeting recommendations for PA + ST (total difficulties: β estimate=-2.15, 95% CI: -2.41 to -1.90; prosocial behaviors: β estimate = 0.98, 95% CI: 0.87 to 1.09). These associations were consistently significant in both boys and girls. Adherence to more 24-HMB recommendations, particularly meeting all recommendations or combined PA + ST recommendations, could improve emotional and behavioral well-being among adolescent girls and boys. The significance of balanced movement behaviors for promoting adolescent mental health merits increased attention.

Characteristics of astigmatism in school-age children aged 5 to 13 years in northeast Sichuan: a cross-sectional school-based study.

Astigmatism is closely associated with myopia progression, vision loss, eye fatigue and amblyopia, which seriously endangers children's eye health. This study aims to investigate the prevalence and characteristic distribution of astigmatism in children in Langzhong City, providing valuable insights for allocating resources and develop prevention and control strategies. A cross-sectional study and random sampling survey were conducted. Between January and November 2021, 21,415 students aged 5 to 13 years from 14 primary schools in Langzhong City underwent non-cycloplegic refractive testing using autorefraction. The data on myopia were analyzed using SPSS (Statistical Package for the Social Sciences) version 23.0. The inclusion criterion was set at an absolute astigmatism value of ≥0.50D. Among the 21,415 children studied, 61.70% were found to have astigmatism. The prevalence of astigmatism varied significantly across different grades (χ2=501.414, P<0.001). The predominant types of astigmatism were mild astigmatism (0.50-1.00D) and with-the-rule astigmatism. Mixed astigmatism was primarily observed in children in grades 1 and 2, while compound myopic astigmatism was more common in children in grades 3 to 6. These differences were statistically significant. As the degree of astigmatism increased, the proportions of against-the-rule astigmatism, oblique astigmatism, compound myopic astigmatism, and simple hyperopic astigmatism decreased, whereas the proportions of with-the-rule astigmatism, mixed astigmatism, and compound hyperopic astigmatism increased. The prevalence of astigmatism among school-age children aged 5 to 13 years in northeast Sichuan is notably high, with compound myopic astigmatism and with-the-rule astigmatism being the most common types. Regular refractive examinations are crucial for the early detection and management of astigmatism.

Prevalence and associated factors of premenstrual dysphoric disorder among high school students in Finote Selam town, northwest Ethiopia.

Premenstrual dysphoric disorder (PMDD) is the most prevalent but neglected psychiatric disorder, with somatic symptoms that are severe enough to markedly affect usual daily activities and have a negative impact on mental health and quality of life by affecting female patients' behavior and cognition. Studies regarding premenstrual dysphoric disorder and associated factors among high school students in low- and middle-income countries are limited. Therefore, the aim of this study was to assess the prevalence and associated factors of PMDD among high school students, and this is pivotal in further investigation. A school-based cross-sectional study was conducted from March 25 to April 17, 2023 using a simple random-sampling technique to select a sample of 564 participants. Premenstrual dysphoric disorder was assessed using the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Self-administered standardized questionnaires were used to collect data. A total of 548 study participants participated, with a 97.2% response rate. The prevalence of premenstrual dysphoric disorder among high school students was found to be 33.03% (95%CI: 29.20-37.09). In a multivariable analysis, irregular menstruation cycle (AOR = 4.242, 95%CI = 2.182-8.246), depression (AOR = 5.272, 95%CI = 2.779-10.002), having greater than 4 days of menstruation bleeding duration (AOR = 2.138, 95%CI = 1.105-4.138), and high perceived stress (AOR = 3.468, 95%CL = 1.217-9.880) were the factors significantly associated with premenstrual dysphoric disorder. The overall prevalence of PMDD which was one-third among high school students was high. Moreover, long duration of menstruation bleeding, depressive symptoms, irregular menstruation cycle, and high perceived stress were significant factors in PMDD. Therefore, it needs early screening and intervention in primary healthcare settings, especially for those who have high perceived stress, having depression, having a long duration of menstruation bleeding, and having an irregular menstruation cycle, so as to have good academic achievement and psychological wellbeing.

Overweight and obesity and associated factors among public and private secondary school adolescent students in Harar city, Eastern Ethiopia: A comparative cross-sectional study.

Adolescent overweight and obesity are growing public health concerns in developing nations like Ethiopia. They are closely linked to an increased risk of non-communicable diseases, a deterioration in health-related quality of life, subpar academic performance, and a decline in social and emotional well-being. There is, however, little research in this field. Thus, this study aimed to assess overweight and obesity and associated factors among public and private secondary school adolescent students in Harar city, Eastern Ethiopia. A school-based comparative cross-sectional study was conducted among 781 secondary school adolescents in Harar city from February to March 2022. Multi-stage sampling was used to identify 781 study participants (586 in public and 195 in private schools). Anthropometric measures and self-administered structured questionnaires were used to obtain the data. Bivariate and multivariate logistic regression were used to determine the association between independent variables and overweight and obesity. Statistical significance was declared at P < .05. The overall magnitude of overweight and obesity was 9.3% [95% confidence interval (CI) = 7.2-11.4%] with 16.2% in private schools. Being female [adjusted odd ratio (AOR) = 2.04, 95% CI: 1.17-3.55], late adolescent age [AOR = 0.53, 95% CI: 0.31-0.90], bigger family size [AOR = 0.55, 95% CI: 0.31-0.97], high paternal education level [AOR = 2.03, 95% CI: 1.08-3.81], eating meat [AOR = 3.41, 95% CI: 1.27-9.17] and not consuming breakfast daily [AOR = 2.13, 95% CI: 1.24-3.67] were factors associated with overweight and obesity among all secondary school adolescents. A high maternal educational level, not eating breakfast and dinner daily in private secondary school adolescents and having a feminine gender, eating eggs, and not walking or riding a bicycle for at least 10 minutes continuously in public secondary school adolescents were factors associated with overweight and obesity. The extent of overweight and obesity was notably higher in the study area. Communities and educational institutions should work together to promote healthy lifestyle choices among adolescents, with a special emphasis on girls and students enrolled in private schools.

Large-scale study in Chengdu, China: The prevalence of myopia full-correction decreased with increasing myopia in adolescents

Myopia is an increasingly serious health issue among children and adolescents worldwide. This study investigated the situation related to myopia among students in Chengdu, a city in western China, and analyzed the prevalence of myopia spectacle wear and myopia full-correction and their influencing factors to understand the current status of myopia prevention. This school-based cross-sectional study investigated 1582 schools in seven districts of Chengdu City, China, enrolling a total of 417,337 students aged 6–18 years (elementary, middle, and high school) from 2020 to 2022. Examination items included uncorrected visual acuity (UCVA), slit lamp examination and non-cycloplegic autorefraction. Myopia was defined as non-cycloplegic SE ≤ −0.50 D + UCVA> 0 log MAR (age ≥6). The prevalence of myopia spectacle wear is defined as the number of people wearing glasses for myopia/the number of people with myopia (%) within the study population, and myopia full-correction is defined as normal vision after wearing glasses for myopia (≤0 log MAR for 6 years and above). With the support of the government, this programme is conducted 1–2 times a year. Statistical analyses are conducted to determine the association between myopia and various parameters.The average age of the entire survey population was 10.96 ± 3.5 years, and the overall prevalence of myopia was 48.7%, myopia spectacle wear was 65.7%, and myopia full-correction was 50.5%. With increasing age and educational levels, the prevalence of moderate to high myopia, the prevalence of myopia spectacle wear, and the prevalence of myopia full-correction all rise. The prevalence of mild myopia full-correction (46.5%) was higher than that for moderate myopia (47.1%) and even higher than that for high myopia (39.6%). The correct utilization rate of myopic spectacles was 33.17%, increasing with age and education levels, with the highest correct utilization rate of 40.7% among those with moderate myopia. The prevalence of myopia among children and adolescents in Chengdu is relatively low, and the prevalence of myopia spectacle wear and myopia full-correction need to be improved, and it was found that with the increase of myopia, the prevalence of myopia full-correction among adolescents decreased instead.

Refraction and ocular biometric parameters in 3-to 6-year-old preschool children : a large-scale population-based study in Chengdu, China

PurposeTo understand the ocular biometric parameters characteristics and refractive errors in 3-to 6-year-old preschool children in Chengdu, China, and to investigate the prevalence of refractive errors.MethodA school-based cross-sectional study was conducted in Chengdu from 2020 to2022 with a total of 666 kindergartens. All children were measured by non-cycloplegic autorefraction and uncorrected visual acuity (UCVA) and ocular biometric parameters. Finally, univariate linear regression models were used to analyze the relationship between ocular biometric parameters and refraction.ResultsA total of 108,578 preschool children aged 3–6 underwent examinations, revealing a myopia prevalence of 6.1%. The mean axial length (AL), keratometry (K), corneal radius (CR), axial length/corneal radius (AL/CR) Ratio, central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), and vitreous chamber depth (VCD) were 22.35 ± 0.69 mm, 43.35 ± 1.58 D, 7.80 ± 0.28 mm, 2.87 ± 0.08, 533.31 ± 32.51 μm, 2.70 ± 0.28 mm, 3.91 ± 0.27 mm, and 15.20 ± 0.68 mm, respectively. With increasing age, AL, CR, AL/CR ratio, CCT, ACD, LT, and VCD also increased. Regardless of age, males consistently exhibited longer AL, flatter corneal curvature, shallower ACD, thicker CCT, thinner LT, and longer VCD compared to females. AL, K, CR, LT, and VCD all showed significant linear relationships with SE (all P < 0.001) in univariate linear regression analysis after adjusting for gender and age.ConclusionThe prevalence of myopia among preschool children aged 3–6 in Chengdu is relatively low. Ocular biometric parameters affecting refractive errors include AL, K, CR, LT, and VCD. The preschool period serves as a critical phase for myopia prevention and control.

Role of Resilience in the Relationship between Adverse Childhood Experiences and Behavior Problems among Thai Adolescents in a Province of Southern Thailand: A School-Based Cross-Sectional Study

Objective: This study aimed to investigate the relationship between adverse childhood experiences (ACEs), behavior problems, and resilience among adolescents in Southern Thailand, with a particular focus on the role of resilience in mediating the relationship between ACEs and behavior problems. Materials and Methods: A paper-and-pencil questionnaire, covering participants’ general information, ACEs, behavior problems, and resilience, was distributed to 383 senior high school students in a province in Southern Thailand. The data was analyzed using descriptive statistics, correlation analysis, and path analysis. Results: Out of the 383 students the questionnaire was distributed to, 374 completed the questionnaire, resulting in a response rate of 97.65%. Alarmingly, 59.36% of the respondents reported experiencing at least one type of ACE. Correlation analysis revealed a significant positive association between ACEs and behavior problems (r=0.17, p&lt;0.01) and a negative correlation with resilience (r = -0.19, p&lt;0.01). Path analysis demonstrated that ACEs directly influenced behavior problems (β=0.23, p&lt;0.01) and resilience (β = -0.24, p&lt;0.01). However, the analysis did not support the hypothesis that resilience mediates the relationship between ACEs and behavior problems. Conclusion: The findings indicate a troubling prevalence of ACEs among senior high school students in Thailand, likely contributing to current adolescent behavior problems. Although the study's path analysis did not align with prior research, it emphasizes the critical role of resilience in mitigating the adverse effects of ACEs. Therefore, resilience remains a necessary skill in helping adolescents cope with the consequences of adverse childhood experiences.

Factors associated with compliance with weekly iron and folic acid supplementation among school adolescent girls in Debub Achefer district, northwest Ethiopia: school-based cross-sectional study.

Iron deficiency anemia is a public health problem among adolescents that could be addressed by weekly Iron Folic Acid Supplementation (IFAS). The Ethiopian government piloted weekly IFAS in schools, where itseffectiveness depends on compliance. We assessed the determinants of compliance with the weekly IFAS in Ethiopia. A school-based survey was conducted in 506 adolescent girls on weekly IFAS. Compliance was considered when girls reported WIFAS for at least three months without discontinuation. Bivariable and multivariable logistic regression models were modeled, with odds ratios reported. Out of 506, 25.8% had limited access to educational resources, and 79.4% had no information on IFAS. Among these, 47.9% (95% CI: 45.5-49.9%) had poor compliance with weekly IFAS. Non-compliance was mainly due to school absenteeism (55.9%). Important predictors of poor compliance were adolescent girls' marital status (AOR = 5.21; 1.55-17.6), academic standing (AOR = 4.37; 2.20-8.70), family income (AOR = 1.85; 1.09-3.15), access to health education materials (AOR = 1.57; 1.02-2.40), problems with IFAS (AOR = 2.44; 1.26-4.74), a discouraging home environment for the program (AOR = 2.27; 1.54-3.34), and a lack of knowledge of the IFAS program (AOR = 1.40; 0.97-2.03). Compliance with weekly IFAS is optimal, which could be improved via strong adherence support and feasible supplementation schedules.

Contraceptive knowledge, prevalence of contraception use, and the association between sex education and contraception knowledge among university students in Michigan, USA.

The danger of sexual activities among adolescents is worrisome worldwide. This study aimed to delineate total contraception knowledge of university students and the prevalence of contraceptive use, in addition to the association between sex education in school and the students' contraception knowledge. A school-based cross-sectional study was carried out. The mean total level of contraceptive knowledge was 16.53 ± 2.38, which ranged from 5 to 18. In response to which method was the most suitable for the youngsters, 36.3% responded pills, 49.2% condoms, 6.3% injection, 0.7% withdrawal, 0.5% periodic abstinence, and 5.9% other. Adjusted to sociodemographic characteristics and other confounders, students with a history of sex education in school tended to have a higher level of contraceptive knowledge than those without [AOR: 1.06; 95% CI: 0.15, 2.64]. Moreover, adjusted to the characteristics of one-night stands, students with a high level of contraceptive knowledge agreed that one-night stands were OK compared with those without the knowledge [AOR: 0.65; 95% CI: 0.16, 1.13]. Although the total contraceptive knowledge was satisfactory, more attention should be paid to male students' education. Modern and long-term effective contraceptive methods had better be included in the training program.