Simplified Chinese RU-SATED Adaptation in Urban Chinese-Speaking Young Adults

Brief multidimensional sleep-health instruments are useful for psychometric, mental-health, and well-being research in young adults exposed to digitalized daily routines. The RU-SATED framework assesses regularity, satisfaction, alertness, timing, efficiency, and duration, but cross-cultural use requires transparent adaptation, careful documentation, and psychometric evidence before scores are interpreted in new language contexts. This study examined a Simplified Chinese research-use adaptation of RU-SATED Version 4.0 among urban Chinese-speaking young adults. A cross-sectional online survey was conducted through Tencent Questionnaire. Project records documented 1,100 submitted questionnaires before preliminary quality control. After 146 preliminary exclusions, the earliest retained analytic file contained 954 cases. A second formal screening removed no additional cases. The retained sample was randomly divided into exploratory and confirmatory subsamples of 477 participants each. Descriptive statistics, item distributions, internal consistency, exploratory factorability, WLSMV confirmatory factor analysis, composite reliability, average variance extracted, and external-validity correlations were examined. The six-item total score showed acceptable internal consistency. The one-factor confirmatory model showed good fit. RU-SATED scores correlated positively with psychological flourishing, interoceptive awareness, digital well-being, and collective resilience, and negatively with daily screen hours. Conclusion: Findings support cautious use of this research-use adaptation as a brief sleep-health index for urban Chinese-speaking young adults. It should not be treated as a diagnostic instrument or an official published Chinese RU-SATED version.