Decision tree model of depressive symptoms among first-grade students from multi-ethnic middle schools in Yunnan Prov-ince
Objective To understand the occurrence and predictive factors of depressive symptoms among multi-ethnic middle school students in Yunnan Province,so as to provide a referential framework for schools to carry out targeted mental health educa-tion.Methods From October to December 2022,8 500 first-grade students from 23 middle schools were selected from 11 minority areas in Yunnan Province by cluster random sampling method.Demographic information and data relating to the students'lifestyles were collected by questionnaire,and the Children's Depression Inventory(CDI)was used to evaluate depressive symptoms.Chi-square test was performed to compare differences in the detection rate of depressive symptoms among first-grade middle school students for univariate analysis.A decision tree model of depressive symptoms in middle school students was established by using the Chi-squared automatic interaction detector(CHAID).Results The detection rate of depressive symptoms among first-grade students from multi-ethnic middle schools in Yunnan Province was 28.26％.The decision tree model of depressive symptoms was ac-ademic stress(x2=469.08)at the first level,breakfast behaviors(low/moderate academic stress:x2=155.49;severe academic stress:x2=105.24)at the second level,and the number of close friends(low/moderate academic stress and consuming breakfast 0-2 days weekly:x2=23.15;low/moderate academic stress and consuming breakfast 3-4 days weekly:x2=14.99;severe academic stress and consuming breakfast 0-2 days weekly:x2=29.26;severe academic stress and consuming breakfast 3-4 days weekly:x2=20.15),ethnicity(x2=78.22)and drinking(x2=50.36)at the third level(P＜0.01).Conclusions The study identifies academic stress,breakfast behaviors,number of close friends,drinking and ethnicity as predictive factors of depressive symptoms among multi-ethnic middle school students in Yunnan Province.Schools should develop targeted strategies for preventing and managing de-pressive symptoms in middle school students,so as to reduce their occurrence.
DepressionMental healthDecision treesStudentsMinority groups
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NSTL
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