大学生正念和睡眠质量在负性生活事件与抑郁情绪间的链式中介作用

Chain mediating effect of mindfullness and sleep quality between negative life events and depression among college students

目的探讨正念在大学生处于负性生活事件、抑郁情绪以及不良睡眠质量等负性状态时所起到的作用。方法采用五因素正念度量表（FFMQ）、青少年生活事件量表（ASLEC）、抑郁自评问卷（SDS）和匹兹堡睡眠质量指数量表（PSQI）对广州某医科院校2792名大一新生进行调查。结果FFMQ总分[（126．02＋12．14）分]与ASLEC得分[（23．93±19．81）分]、SDS得分[（35．89±7．31）分]、PSQI得分[（3．45±2．13）分]呈负相关（r=-0．17，r=-0．44，r=-0．26，P〈0．01）；其中男生在“正念-不行动”方面的得分显著高于女生[（21．20±3．36）分，（20．52±2．88）分，P〈0．01]；女生在PSQI、SDS方面的得分显著高于男生[（3．58±2．15）分，（3．21±2．08）分，P〈0．05；（36．22±7．26）分，（35．27±7．35）分，P〈0．01]；正念与睡眠质量在负性生活事件与抑郁情绪之间呈现链式中介效应，且模型拟合良好（RM—SEA=0．048，CFI=0．962，TLI=0．943），其中总中介效应量为61．41％，通过正念这一中介路径的中介效应量为16．71％，链式中介效应量为8．94％。结论正念水平越高，个体的抑郁得分越低、睡眠质量越好，正念与睡眠质量一起在负性生活事件与抑郁情绪之间起链式中介作用。

Objective To explore the role of mindfullness in the negative life events, depression, and poor sleep quality. Methods Using five facet mindfullness questionnaire（ FFMQ）, adolescents self-rating life events checklist （ASLEC）, self-rating depression scale （SDS） and Pittsburgh sleep quality index （PSQI） to investigate 2 792 freshmen in a medical university in Guangzhou. Results The FFMQ score （ 126.02± 12.14） was negatively correlated with ASLEC score（ 23.93±19.81 ） ,SDS score（ 35.89±7.31 ） and PSQI score（3.45±2.13）（r=-0. 17,r=-0.44,r=-0.26, P〈0.01）.The boys in the aspects of ＂mindfullness- inaction＂ scored significantly higher than that of girls （21.20 ± 3.36,20.52±2.88,P〈0.01 ）.The girls scored significantly higher than boys in the PSQI, SDS （ 3.58±2.15,3.21 ±2.08, P〈0.05; 36.22±7.26,35.27±7.35, P 〈0.01 ）.Mindfullness and sleep quality showed a chain-mediated effect between negative life events and depression,and the model fitting was good （ RMSEA = 0.048, CFI = 0.962, TLI = 0.943 ）. The total mediating effect size was 61.41%. The mediating path through mindfullness, with the effect size of 16.71%, and the chain-mediating effect was 8.94%. Conclusion The higher the level of mindfullness, the lower the individu- al＇s depression score and the better the quality of sleep. Mindfullness and the sleep quality play a role of chain-mediating effect between negative life events and depression.