青少年不同屏幕使用类型与就寝时间的关系

Abstract Background Recreational screen time is linked to poorer sleep among adolescents. However, most evidence focuses on total recreational screen time rather than on time spent on different screen-based activities. Also, few studies have specifically examined bedtime, an actionable determinant of adolescent sleep hygiene. To date, it is not clear how age and typical bedtime influence this relationship. The objective of this study was to examine the associations between time spent on different screen-based activities and adolescents’ bedtimes. We also aimed to examine how these associations