应激生活事件和社会支持对大学生抑郁风险预警阈值研究OA

Objective:Depression is the most common emotional problem among adolescents.Among them,recent stress and social support are the key risk factors and protective factors affecting depression among college students.This study explores the prediction threshold effects in the relationship between these two key factors and depression among college students,with a view to providing scientific basis for improving the accuracy and validity of depression risk prediction and developing an early warning system for depression risk.Methods:This study was conducted for 14,043 college students in three comprehensive institutions in Hubei Province to analyze the association between col-lege students'depression and its association with stressful life events and social support,SPSS 26.0 software was used for descriptive statistics and linear regression.R3.5.2 software was used forpiecewise regression model(PRM)to explore the prediction threshold of stressful life events and social support on depression in order to improve the accu-racy and validity of depression risk prediction and to provide scientific basis for the development of depression risk early warning system.Results:① There was a significantly negative correlation between social support and stressful life events and depression(P＜0.01)and a significantly positive correlation between stressful life events and depres-sion(P＜0.01);②The effects of stressful life events and social support on college students'depression did not show a simple linear relationship,and there was a significant threshold effect in their relationship,when the threshold of stressful life events reached 42.055 and the threshold of social support was below 18.318,college students'depression deteriorated significantly;③ The college student population could be categorized into four groups based on the threshold effects of stressful life events and social support on depression,with different mean values of depression water for each category.Students in the high stress life event low social support group again had significantly higher levels of depression than students in the high stress life event high social support group(P＜0.05);④There was also a significant difference in the distribution of the four groups of college students by gender(x2=129.014,P＜0.001),with the percentage of male students in the high stress life event low social support group(43.7％)being significantly higher than the percentage of male students in the overall sample(30.1％).Conclusion:There is a threshold effect be-tween stressful life events,social support,and college students'depression.The level of depression in the high-stress life event and low-social support group is more severe according to the classification by the threshold effect.Only when the stressful life event is below the threshold of 42.055 and the social support is above the threshold of 18.318 can college students'depressive emotions be significantly alleviated.