Age at menarche, menstrual problems, and daytime sleepiness in Chinese adolescent girls

摘要

Study ObjectivesMenstrual problems and daytime sleepiness are prevalent in adolescent girls. Little is known about the associations between age at menarche, menstrual problems, and daytime sleepiness. This study aimed to examine the associations of age at menarche and menstrual problems with daytime sleepiness among Chinese adolescent girls.