Analysis of the prevalence and risk factors of overweight and obesity in fourth grade students in China
Objective To analyze the prevalence of overweight and obesity and their risk factors among fourth grade students in China.Methods A total of 29 996 students were selected from the fourth grade primary school cohort of China education panel survey(CEPS)in 2018-2019 school year.Chi-square test was used to examine the differences in the prevalence of overweight and obesity among different groups and logistic regression models were used to analyze the factors related to overweight or obesity.Results The prevalence of overweight/obesity among fourth-grade elementary school students was 22.4%.The prevalence of overweight and obesity was 12.3%and 10.1%respectively.Logistic regression analysis indicated that the rate of overweight/obesity among boys was higher than girls(OR=2.60,95%CI:2.43-2.78,P<0.001),with respective rates of 29.2%and 14.6%.The rate of overweight/obesity among students in the 11-year-old group was lower than that in the 10-year-old group(OR=0.81,95%CI:0.76-0.87,P<0.001),with respective rates of 20.9%and 23.8%.The rate of overweight/obesity among students attending urban schools was higher than students attending rural schools(OR=1.45,95%CI:1.31-1.60,P<0.001),with respective rates of 23.7%and 15.3%.The rate of overweight/obesity among only children was higher than non-only children(OR=1.42,95%CI:1.33-1.52,P<0.001).The rate of overweight/obesity among students with a sports hobby was lower than students without a sports hobby(OR=0.74,95%CI:0.69-0.79,P<0.001).Besides,our results found that the higher the frequency of skipping breakfast,the greater the risk of overweight/obesity for students;the higher the frequency of consuming fried/grilled/puffed foods,the greater the risk of overweight/obesity for students.Conclusions Schools should scientifically guide fourth-grade students to reasonably combine meals,maintain a healthy diet,and encourage students to actively increase their sports time.Attention and precise prevention should be strengthened for high-risk groups such as male students,urban students,and only children.