Development and validation of SATED Sleep Health Assessment Scale-Chinese version (SATED-TW)

Objectives: This study translated the English version of the SATED sleep health scale into Chinese (denoted as SATED-TW) and evaluated its reliability and validity. The scale includes five domains of sleep health: satisfaction with sleep, alertness, timing, sleep efficiency, and sleep duration. Methods: A translation–back-translation procedure was used to create the SATED-TW. A bilingual expert group assessed the face validity of the SATED-TW. A field survey involving an online face-to-face interview was then conducted among 647 adults aged 20 years or older between September and November 2021. The scale’s internal consistency, test–retest reliability, convergent validity, discriminant validity, and construct validity were assessed on the basis of the survey data. Results: The bilingual expert group confirmed the face validity of the SATED-TW. The survey data revealed a Cronbach α value of 0.570, and the intraclass correlation coefficient for 2-week test–retest reliability was 0.767. In addition, both exploratory and confirmatory factor analyses suggested a single construct of the SATED-TW. Conclusions: The SATED-TW demonstrated good test–retest reliability and a satisfactory level of construct validity. The scale is brief, has been translated into several languages, and is thus suitable for use in large-scale field surveys of sleep health. Use of the scale can facilitate international comparisons.