大学生饮料消费睡眠质量和抑郁症状的关系

研究睡眠质量在饮料消费与大学生抑郁症状关联中的中介作用,为预防和减轻大学生抑郁症状提供理论依据.方法 采用横断面研究的方法,从安徽省和江西省2所大学整群抽取大一至大三4 624名大学生进行问卷调查.应用9项患者健康问卷(Patient Health Questionnaire-9 items,PHQ-9)评估抑郁症状,采用匹兹堡睡眠质量指数量表(Pittsburgh sleep quality index,PSQI)评估睡眠质量,使用自我报告的饮食频率调查表评估饮料的消费.使用分位数回归模型进行关联分析,应用潜变量中介效应模型分析中介效应.结果 大学生轻度、中度、中重度和重度抑郁检出率分别为31.4%,7.5%,4.1%和2.0%.饮料消费评分、PSQI评分和PHQ-9评分之间的关联有统计学意义(P值均<0.01).饮料消费和PSQI评分的分位数越高,回归系数更大,呈现明显的剂量反应关系(P<0.01).在饮料消费与大学生抑郁症状关联的潜变量中介效应模型中,睡眠质量的中介效应值为0.12,中介效应占总效应的比例为71.3%.结论 大学生较差的睡眠质量在饮料消费与抑郁症状之间起部分中介作用.

Beverages consumption,sleep quality and depressive symptoms in Chinese university students:a latent variable mediation model

Objective This study aimed to examine the mediating effects of sleep quality in the association between beverages consumption and depressive symptoms in Chinese university students,and to provide a theoretical reference for preventing and reducing depression symptoms.Methods This school-based cross-sectional survey was carried out among 4624 university students from 2 universities in Anhui and Jiangxi provinces of China.The patient health questionnaire-9 items(PHQ-9)was used to assess depressive symptoms.The Pittsburgh sleep quality index(PSQI)was used to assess sleep quality,and a self-reported dietary frequency questionnaire was used to measure beverages consumption.The quantile regression model was used to association analysis,and the latent variable mediation model was used to analyze the mediation effect.Results The positive rates of mild,moderate,moderate to severe and severe depression in 4624 university students were 31.4%,7.5%,4.1%and 2.0%,respectively.There was a significant association between the beverages consumption score,the PSQI score,and the PHQ-9 score(P<0.01).The higher the quantile of the beverage consumption and PSQI score,the greater the regression coefficient(β),and a significant dose-response relationship was observed(P<0.01).In the latent variable mediation model of beverages consumption associated with depressive symptoms in Chinese university students,the mediating effect value of sleep quality was 0.12,and the ratio of mediating effect to total effect was 71.3%.Conclusion Our study demonstrates that poor sleep quality partially mediates the association between beverages consumption and depressive symptoms in Chinese university students.