Abstract
AIM: Children and adolescents get fewer than the recommended hours of sleep. The Child and Adolescent Sleep Checklist for parents (CASC-P) was designed to identify sleep habits and screen for sleep problems in junior high school students in Japan. This study aimed to validate the Japanese version of the CASC-P for junior high school students and determine its internal consistency. METHODS: We used confirmatory factor analysis (CFA) and Cronbach's α to validate the scale and examine reliability. The analysis involved 218 parents of students aged 12-15 years. RESULTS: Cronbach's α for the overall scale was 0.771. The prevalence of sleep problems was 15.6%. Factorial construct validity was assessed using the four-factor model used in the original CASC-P. Almost all items loaded meaningfully on their designated factors, and standardized factor-loading values ranged from 0.278 to 0.878 (except for items 1, 2, 9, 16, and 21). CONCLUSION: : The CASC-P is a suitable questionnaire for assessing parents' perspectives on adolescent sleep behavior.