Adolescent depressive symptoms in single-parent families in Jianyang City and construction and verification of the early warning model
Objective To analyze the current situation of adolescent depressive symptoms in single-parent families in Jianyang City,and to construct and verify the early warning model,so as to provide a scientific basis for the government to formulate a plan of promoting the development of adolescent mental health.Methods A stratified cluster random sampling method was used to se-lect 12 125 middle and high school students from 25 middle schools in Jianyang City from March 2022 to October 2023 for an anony-mous self-filling questionnaire survey,and a total of 1 142 adolescents from valid single-parent families were obtained as the survey objects.They were randomly divided into the training set(914 participants)and the verification set(228 participants)according to the ratio of 8∶2.The Chinese version of Beck depression Inventory(BDI)was used to evaluate depressive symptoms among adoles-cents from single-parent families in Jianyang City.The factors related of depressive symptoms in adolescents from single-parent fami-lies were analyzed,and a prediction model was established to verify the model and evaluate its effectiveness.Results There were 158 adolescents(17.29%)in the training set and 43 adolescents(18.86%)in the verification set with depressive symptoms.Multi-variate Logistic regression analysis showed that learning stress(OR=4.31,95%CI=1.67-11.13),Connor-Davidson Resilience Scale(CDRISC)score(OR=0.29,95%CI=0.12-0.71)and Family Adaptability and Cohesion Scale(FACES Ⅱ)scores(OR=0.19,95%CI=0.06-0.63)were all related factors the occurrence of depressive symptoms in adolescents from single-parent families(P<0.05).The results showed that the C-index was 0.80(95%CI=0.75-0.80),and the correction curve for predicting the occur-rence of depressive symptoms in single-parent families was close to the ideal curve(x2=0.26,P>0.05).Receiver operating charac-teristic(ROC)curve results of the training set showed that the sensitivity and specificity of the nomogram model in predicting de-pressive symptoms in adolescents from single-parent families were 80.38%and 80.03%respectively,ROC area under the curve(AUC)was 0.84(95%CI=0.76-0.92).The ROC curve results of the verification set showed that the sensitivity,specificity and AUC of histogram model to predict depressive symptoms in adolescents from single-parent families were 79.07%,82.16%and 0.83(95%CI=0.76-0.91).Conclusions Learning stress,mental resilience and family function are all factors that affect the occur-rence of depressive symptoms in adolescents from single parent families in Jianyang City.Based on this,the early warning model can predict depressive symptoms in Jianyang City.