Mu Yunping, Wang Yueying, Yuan Jinjin, Knutson Kristen L, Zhu Daqiao, Izci-Balserak Bilgay, Wu Yinghui, Zhu Bingqian
School of Nursing, Shanghai Jiao Tong University, Shanghai, China.
Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
Sleep Health. 2023 Feb;9(1):117-123. doi: 10.1016/j.sleh.2022.09.005. Epub 2022 Oct 26.
To generate the Chinese Sleep Health Index (SHI-C) in Mandarin with cross-cultural adaptations and test its psychometric properties.
This study used a cross-sectional design. Health science students were included (N = 271) and a sub-set (n = 74) was invited for the re-test. Cross-cultural adaptation of the SHI-C was performed prior to formal validation. The SHI-C, Pittsburgh Sleep Quality Index (PSQI), Insomnia Severity Index (ISI), Bedtime Procrastination Scale, and Sleep Hygiene Index were used to measure variables of interest. Exploratory factor analysis was used to evaluate the structure validity. Bivariate analyses were used to evaluate the construct validity.
Exploratory factor analysis identified 3 factors (ie, sleep quality, sleep duration, and disordered sleep) accounting for 55.6% of the total variance. The SHI-C total and sleep quality sub-index scores were significantly associated with both PSQI global score (r = -0.132, p < .05; r = -0.182, p < .01, respectively) and ISI score (r = -0.655, p < .05; r = -0.820, p < .05, respectively). SHI-C total, sleep quality sub-index, and sleep duration sub-index scores were significantly associated with Bedtime Procrastination Scale and Sleep Hygiene Index scores (r = -0.238 to -0.368, p < .05). Students with insomnia (ISI > 9) or poor sleep quality (PSQI > 5) had significantly lower SHI-C scores than those without (73.5 vs. 89.0, p < .01; 84.1 vs. 86.7, p < .05, respectively). SHI-C showed good internal consistency (Cronbach's alpha = 0.73) and test-retest reliability (intraclass correlation coefficient = 0.82).
The SHI-C demonstrated good validity and adequate reliability in a Chinese sample of health science students. It could be used to measure sleep health in future research and practice. Psychometric properties of the SHI-C among other Chinese populations remain to be confirmed.
通过跨文化调适生成中文版睡眠健康指数（SHI-C）并测试其心理测量学特性。
本研究采用横断面设计。纳入健康科学专业学生（N = 271），并邀请其中一部分（n = 74）进行复测。在正式验证之前对SHI-C进行跨文化调适。使用SHI-C、匹兹堡睡眠质量指数（PSQI）、失眠严重程度指数（ISI）、就寝拖延量表和睡眠卫生指数来测量相关变量。采用探索性因子分析评估结构效度，双变量分析评估构想效度。
探索性因子分析确定了3个因子（即睡眠质量、睡眠时间和睡眠紊乱），占总方差的55.6%。SHI-C总分及睡眠质量子指数得分与PSQI总分（分别为r = -0.132，p <.05；r = -0.182，p <.01）和ISI得分（分别为r = -0.655，p <.05；r = -0.820，p <.05）均显著相关。SHI-C总分、睡眠质量子指数和睡眠时间子指数得分与就寝拖延量表和睡眠卫生指数得分显著相关（r = -0.238至-0.368，p <.05）。患有失眠（ISI > 9）或睡眠质量差（PSQI > 5）的学生的SHI-C得分显著低于未患失眠或睡眠质量好的学生（分别为73.5对89.0，p <.01；84.1对86.7，p <.05）。SHI-C显示出良好的内部一致性（Cronbach's α = 0.73）和重测信度（组内相关系数 = 0.82）。
SHI-C在健康科学专业学生的中国样本中显示出良好的效度和足够的信度。它可用于未来研究和实践中测量睡眠健康。SHI-C在其他中国人群中的心理测量学特性仍有待确认。
