压力知觉在研究生健康关注度和生活习惯间的中介调节效应

目的 探讨压力知觉在健康关注度与生活习惯间的中介和调节效应。方法 采用分层抽样的方法,对我国3省的414名研究生进行调查,采用线性回归模型分析压力知觉对健康关注度与生活习惯关系的中介和调节效应,并采用结构方程模型验证。结果 健康关注度得分越高,各项生活习惯得分越高,差异有统计学意义（P<0.001）;压力知觉越高,各项生活习惯得分越低,差异具有统计学意义（P≤0.01）。压力知觉在健康关注度与早餐习惯、熬夜习惯之间起到调节效应（P<0.05）。压力知觉在健康关注度与早餐习惯、饮酒习惯、运动习惯和总习惯之间起到部分中介作用,标准化直接效应及95%CI分别为0.422（0.332~0.511）、0.199（0.108~0.290）、0.481（0.395~0.567）、0.645（0.572~0.718）。结论 健康关注度较低、压力知觉较高的研究生易出现不健康的生活习惯,压力知觉在一定程度上影响健康关注度对部分生活习惯的效应。

Mediating and Moderating Effects of Perception of Stress between Health Concern and Living Habits

Objective To explore the mediating and moderating effects of perception of stress between health concern and living habits. Methods We recruited 414 postgraduates from three provinces across China by stratified sampling method. A linear regression model was used to analyze the mediating and moderating effects of perception of stress between health concern and living habits, and the structural equation model was used to verify its effect. Results The score of lifestyle habits increased with the score of health concern, and the difference was statistically significant（P<0.001）. Perception of stress was negatively correlated with lifestyle habits, indicating statistical significance (P≤0.01). Perception of stress played a mediating role between health concern and the habit of eating breakfast and staying up late (P<0.05), and it was a partial mediator between health concern and the habit of eating breakfast, drinking, exercise and overall daily habits. The standardized direct effect and 95%CI were 0.422(0.332~0.511), 0.199(0.108~0.290), 0.481(0.395~0.567), and 0.645(0.572~0.718), respectively. Conclusion Postgraduates with inadequate health concerns and higher perception of stress are prone to unhealthy lifestyle habits. To a certain extent, perception of stress affects the effect of health concerns on some lifestyle habits.