Trends in common diseases among primary and secondary school stu-dents in Dongying City from 2019 to 2021
Objective This study was aimed at determining the epidemic status and variation tendencies for com-mon diseases among primary and secondary school students in Dongying City from 2019 to 2021,to provide a scientific basis for preventing and controlling common diseases among students.Methods A cross-sectional survey was conducted among primary and secondary school students in Dongying City through a stratified cluster random sampling method.Epidemic sta-tus and variation tendencies were analyzed for myopia,dental caries,overweight,obesity and malnutrition.Results The sample sizes in three surveys were 6 820,6 774 and 7 025.From 2019 to 2021,the respective prevalence of myopia was 62.9％,61.9％and 64.6％;the prevalence of dental caries was 60.2％,64.8％and 57.6％;the prevalence of overweight was 17.0％,17.7％and 17.1％;the prevalence of obesity was 19.7％,23.6％and 23.2％;and the prevalence of malnutrition was 6.0％,4.3％and 4.7％.Increasing trends were observed in overall prevalence of myopia(primary school students)and obesity(boys and girls,and primary,middle and high school students)(all P＜0.05).Decreasing trends were observed in the overall prevalence of dental caries(girls,and primary and junior high school students)and malnutrition(boys and girls,and primary school students)(all P＜0.05).The differences in the prevalence of myopia,dental caries,overweight and obesity were statisti-cally significant between sexes.The prevalence of myopia increased with increasing learning stage(all P＜0.05).The preva-lence of dental caries and obesity decreased with increasing learning stage(all P＜0.05).Conclusions The malnutrition sta-tus among primary and secondary school students in Dongy-ing City was comparable to the national average.The preva-lence of myopia,dental caries and obesity was high and cor-related with sex and learning stage.Moreover,the preva-lence of myopia and obesity is rising.
Primary and secondary school studentsCommon diseasesEpidemic statusVariation tendency
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