Association between depression symptoms and non-suicidal self-injury among the left-behind junior high school students:a longitudinal study
Objective To investigate the changing trend,development partnership and timing effect between de-pression symptoms and non-suicidal self-injury among the left-behind junior high school students.Methods A stratified multi-stage random cluster sampling method was used to conduct a longitudinal survey among 372 left-behind junior high school students,and 3-times follow-up survey was carried out in one year.Children Depression Scale and Adolescent non-suicidal self-injury assessment Questionnaire were used for measurements.Results The depression symptoms and non-sui-cidal self-injury were linearly increasing among left-behind junior high school students.The initial level of depression posi-tively predicted the initial level and growth rate of non-suicidal self-injury(β=0.473,β=0.577;P＜0.01),the growth rate of depression positively predicted growth rate of non-suicidal self-injury(β=0.806,P＜0.001).Cross-lagged re-gression analysis showed that Tn depression significantly predicted Tn+1 non-suicidal self-injury(β=0.365,β=0.322;P＜0.001),Tn non-suicidal self-injury had no significant predictive effect on Tn+1 depression(β=0.117,β=0.094;P＞0.05).Conclusion The depression symptoms and non-suicidal self-injury is increasing in the left-behind junior high school students over time,depression is the antecedent variable of non-suicidal self-injury,and depression predict non-sui-cidal self-injury significantly.
Left-behind junior high school studentsDepressionNon-suicidal self-injuryLatent variable growth modelCross-lagged model
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