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PubMed | Institute of School Health, Peking University and Tianjin Women and Children Health Center
Type: Journal Article | Journal: Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi | Year: 2016

To understand the prevalence of deliberate self-harm in middle school students in Beijing, and explore the relationship between self-harm and suicidal behaviors.An anonymous self-administered questionnaire survey was conducted among 5 807 students selected through cluster random sampling from grade 9 to grade 12 in 16 middle schools in Beijing.Among the surveyed middle school students, 35.6% reported that they once had self-harm behaviors, 7.0% reported often had self-harm behaviors in the past 30 days before the survey. More girls reported self-harm behaviors than boys did. And the prevalence of self-harm behaviors was highest in girls in grade 8 and in boys in grade 9. The students in key senior high schools, or living with single or remarried parents were the risk population to have self-harm behaviors. Higher suicide behavior reporting rate was correlated with higher self-harm behavior reporting rate. Compared with students who reported no self-harm behaviors during the past month, the suicide behavior reporting rate in students reporting self-harm behaviors increased by 5.7-12.3 times.Deliberate self-harm behaviors were associated with suicide behaviors among middle school students in Beijing. Early psychological intervention and life education should be carried out among middle school students in order to find risk population and save their life.

PubMed | Institute of School Health, Capital Medical University and Peking University
Type: | Journal: Economics and human biology | Year: 2016

To analyze the growth trends of children in Beijing from 1955 to 2010.Data for the period 1955-1975 were derived from published records. Data for the period 1985-2010 were derived from the Chinese National Survey on Students Constitution and Health (CNSSCH). Since 1985, the overall sampling and measurement methods have been consistent. The mean, the standard deviation, and the variance (ANOVA) of height, weight, and BMI by age and sex of students aged 7-17 were calculated and analyzed.Between 1955 and 2010, the average height and weight of children in Beijing has increased. The average increments per decade for boys and girls were 2.45cm and 2.03cm in height and 2.68kg and 1.68kg in weight, respectively. The largest height increase per decade occurred between 1975 and 1985: 4.51cm and 3.23cm for boys and girls, respectively. The largest height increase for the entire 55-year period under study occurred among boys at age 13 (17.85cm) and among girls at age 11 (15.90cm.)During the period 1955-2010, growth trends among children in Beijing were positive. The health and nutritional status of these children improved significantly. Since 2007, might be related to government intervention, childhood obesity has been curbed.

Duan J.,Institute of School Health | Hu H.,Waseda University | Wang G.,Institute of School Health | Arao T.,Waseda University
PLoS ONE | Year: 2015

Introduction This study aimed to determine current levels of physical activity and sedentary behavior in middle school students on the basis of grade, sex, student attitudes toward physical education, and residence location. Methods In 2013, a cross-sectional study of 1793 students aged 12 to 15 years was conducted across eight middle schools in Beijing, China. Four schools were selected from an urban district and another four schools were from a suburban district. Physical activity and sedentary behavior data were collected using the commonly used school-based Chinese version of the China Health and Nutrition Survey. Results The mean age of sampled students was 13.3±1.0 years; 51.5%were boys. Approximately 76.6% of students reported having three 45-minute physical education classes every week. A total of 35.6%students spent ≥1 h/day performing moderate to vigorous physical activity (MVPA) during school, and 34.9% spent ≥1 h/day in MVPA outside school time. Approximately half (49.7%) of the students engaged in reading, writing, or drawing for ≥2 h/day, and 42.9% reported screen time for ≥2 h/day. Although boys spent more time engaged in physical activity than girls did, they also spent more time exhibiting sedentary behavior. Each 10-unit increase in attitudes toward physical education was associated with an increased odds of 1.15 (95%CI: 1.09-1.20) for spending more than 1 h/day on MVPA. Students in suburban schools reported engaging in physical activity less when compared with those in urban schools. Conclusion The majority of our students did not meet the current physical activity recommendations, and about half of the students spent excessive time engaging in sedentary behaviors. Findings from this study highlight a positive association between student attitudes toward physical education and physical activity. Studies are needed to further explore the role of student attitudes toward physical education in promoting physical activity among Chinese students.

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