Objective: To analyze the association between overweight, obesity and high blood pressure among middle school students in Kaifeng city. Methods: A multi stage stratified cluster sampling method was used to select 4 058 middle school students in Kaifeng City to measure blood pressure, height and weight, and to analyze the relationship between overweight and obesity and high blood pressure from September to October 2019. Results: The prevalence of high blood pressure in middle school students in Kaifeng was 11.78%. Compared with normal weight group, overweight ( OR =1.65) and obesity ( OR =3.32) were significantly correlated with the risk of high blood pressure ( P <0.01). The risk of high blood pressure in overweight and obese boys was 1.87 and 4.16 times higher than that in normal weight boys, respectively. The risk of high blood pressure for overweight and obese girls was 1.55 and 2.69 times higher than that for normal weight girls, respectively. The risk of high blood pressure in high school and normal weight group, middle school and overweight/obesity group, and high school and overweight/obesity group were 1.90, 2.85 and 3.39 times higher than that in middle school and normal weight group, respectively ( P =0.02). Conclusion The prevention of high blood pressure in middle school students should start from the prevention of overweight and obesity, especially among overweight and obese boys. Risk of high blood pressure increases with grade among overweight/obese middle school students.

Objective: To understand the prevalence and influencing factors of depressive of middle school students in Kaifeng City, and to provide evidence for the prevention and control of depressive symptoms among middle school students. Methods: A multistage stratified cluster random sampling method was used to select 4 058 middle school students in Kaifeng City from September to November 2019. A questionnaire survey was conducted using the Center for Epidemiologic Studies Depression Scale (CES-D). Results: The prevalence of depressive symptoms among middle school students in Kaifeng City was 14.51%. The results of multivariable Logistic analysis showed that the risk of depressive symptoms in high school students was significantly higher than that of middle school students( OR =1.47). Call in sick, leaving school due to illness, serious injury, school bullying, fighting, domestic violence, smoking and internet addiction were positively associated with depressive symptoms( OR =1.37，1.67，1.91，2.69， 1.65 ，2.29，1.47，2.58， P <0.05). In addition, the interaction of fighting and smoking was associated with more depressive symptoms in middle school students. Conclusion The depression of middle school students is closely related to grade, family and campus environment. Developing a positive family and school environment, preventing adverse events in daily life are necessary measures to reduce the risk of depression symptoms for students.