The Correlation Between Scoliosis Prevalence And BMI In Primary And Secondary School Students In Shenyang

Objectives:The epidemic status and distribution characteristics of scoliosis in primary and secondary school students in Shenyang were described,the influencing factors of scoliosis and BMI in primary and secondary school students were understood,and the correlation between scoliosis and BMI in primary and secondary school students was discussed.Methods:In 2021,7 schools were selected in Heping District of Shenyang City and 5schools in Xinmin City according to the method of multi-stage stratified cluster sampling.Among them,2 primary schools,2 junior high schools and 1 vocational high school were selected from Heping District;Xinmin City will draw two primary schools and two junior high schools,and one high school.At least 100 students per grade are selected in the whole class,and the insufficient part is supplemented by nearby schools of the same type,and the sociodemographic characteristics of the relevant students are collected,the relevant information such as students’ weight and height are measured,and the relevant detection and diagnosis of scoliosis are carried out.The research population was divided into scoliosis group and non-scoliosis group according to scoliosis,the Chi-square test was used to analyze the difference in the composition ratio of demographic variables and scoliosis-related risk factors between scoliosis groups,the Mann-Whitney U rank sum test was used to compare the difference of BMI value between primary and secondary school students in different genders,school segments and ethnicities,and the Kruskal-wallis test of k independent samples was used to compare the BMI value between different diets and exercise.According to the "WS/T 586-2018 Screening of Overweight and Obesity in School-age Children and Adolescents",the measured BMI values were divided into four groups of S1～S4(normal,wasting,overweight,and obese),and the distribution characteristics of the demographic variables of BMI values in each group were analyzed,and ANOVA was used to analyze the differences between eating habits and exercise in each BMI group.Taking BMI value as the independent variable(S1 as the reference group)and scoliosis status as the dependent variable(0=non-scoliosis,1=scoliosis),the possible risk factors for scoliosis were analyzed by multivariate logistic regression,and the difference <was considered to be statistically significant by using bilateral tests.The scoliosis patients in the primary and secondary school population in the study were used as the case group,and the propensity score matching method was used to control the interference of confounding factors,and the corresponding control group was obtained according to 1:1 matching,and logistic regression was carried out,and the influencing factors of scoliosis after matching were analyzed,as well as the OR value and 95% CI of primary and secondary school students in different BMI groups.Results:In this study,a total of 4906 people were selected,5% of invalid questionnaires were removed,and 4660 primary and secondary school students were finally included,and 116 people were detected in scoliosis,accounting for 2.5% of the population tested.The median BMI of the study population was 19.70,its interquartile range was(17.10,23.10),and the basic BMI classification was 53.3%(2482 people),overweight was18.5%(863 people),obesity was 25.1%(1169 people),and wasting was 3.1%(146people).The study found that scoliosis in the population was related to BMI value,BMI classification,school segment,gender,urban and rural areas,backpack habits,bag weight,whether class seats were rotated,and mattress hardness.The BMI value of the population was related to school segment,gender,whether or not to eat breakfast,sugary drinks,fried foods,fresh fruits,fresh vegetables,and the average number of physical education sessions per week.The classification of BMI in the population was related to the intake of school segment,gender,sugary drinks and fried foods,and the differences were statistically significant(P<0.001).The logistic regression results showed that after controlling for school segment,gender,urban-rural distribution,backpack habits,school bag weight,whether class seats were rotated,and mattress softness,the risk of scoliosis was reduced among primary and secondary school students whose BMI was classified as obese.After matching the propensity score,primary and secondary school students with BMI classification as overweight and obese had a reduced risk of scoliosis,and primary and secondary school students classified as wasting had an increased risk of scoliosis.Conclusion:The results found that scoliosis in primary and secondary school students is closely related to BMI value,which provides a population basis for further research on the correlation between scoliosis and BMI value in primary and secondary school students.