匹兹堡睡眠质量指数用于天津市公务员人群的信度和效度研究

摘要

目的:考评匹兹堡睡眠质量指数(PSQI)在天津市公务员人群中的信度和效度,了解其睡眠质量的分布状况.方法:通过分层随机整群抽样方法从天津市公务员人群中抽取调查对象,采用PSQI对其进行调查,获得有效样本3610例.通过计算折半信度、Cronbach'sα系数、区分效度、结构效度等指标考察PSQI的信度和效度.结果:天津市3610例公务员PSQI平均得分为(4.535±2.959)分,睡眠障碍的发生率为13.82％.不同年龄、学历、婚姻状况、家庭人均月收入组间PSQI总分的差异有统计学意义(P＜0.05或P＜0.01),而不同性别间差异无统计学意义(P＞0.05).PSQI的折半信度的Spearman-Brown系数为0.881,Cronbach'sα系数为0.746.在结构效度的评价中,因子分析所产生的3个公因子可解释总变异的52.91％,大多数条目在其中1个因子上有较高负荷值,而对其他因子的负荷值则相对较低.结论:天津市公务员人群睡眠障碍的发生率较高,PSQI应用于天津市公务员人群具有较好的信度和效度.%Objective: To assess the reliability and validity of Pittsburgh Sleep Quality Index (PSQI), and investigate the sleep quality status among civil servants in Tianjin. Methods: The participants were selected randomly from civil servants in Tianjin by using stratified cluster sampling method. Valid samples (3 610) were obtained from the PSQI. The reliability and validity of PSQI were evaluated by calculating the split-half reliability, Cronbach' s alpha coefficient, construct validity and discriminate validity. Results: The average score of PSQI was 4.535±2.959. The incidence of sleep disorders was 13.82%. The mean difference of PSQI score between different age, education, marital status, family income groups was statistically significant, while no difference was found between gender groupa(P > 0.05). The split-half reliability of PSQI was 0.881, Cronbach's a coefficient was 0.746. The factor analysis produced three components, which explained 52.91% of total variance. Most items showed a higher factor loading in one of the three factors, while relatively lower in other factors. Conclusion: The incidence of sleep disorders is rather high in Tianjin civil servants. In this study PSQI has good reliability and validity.