To clarify the predictors of poor sleep quality in Japanese adolescents. In 2010, baseline surveys were administered to students at 24 randomly selected schools—10 junior high schools and 14 senior high schools—in Japan. After 2 years, follow-up surveys were administered to the same students. The questionnaires included the following five items: basic attributes, sleep status, lifestyle factors, social relationships, and mental health status. Only participants without “poor sleep quality” at baseline were included for analyses and the incidence proportion of poor sleep quality was calculated by observing the rate of poor sleep quality at follow-up. A total of 3473 students were included for analysis. During the 2 years leading to the follow-up study, the incidence proportion of poor sleep quality was 7.7% among junior high and 6.9% among senior high school students. Multivariate analyses revealed that factors associated with poor sleep quality were poor mental health, no extracurricular learning, and short sleep duration on weekdays in junior high school students and poor mental health, waking up at 7:00 or later on weekdays and short sleep duration on weekdays in senior high school students. In junior high school students, mental health status, extracurricular learning, and sleep duration could be predictors of poor sleep quality, whereas in senior high school students, mental health status, waking time, and sleep duration on weekdays could be predictors. The present findings suggest that sleep health should be promoted among junior and senior high school students.

阐明日本青少年睡眠质量差的预测因素。2010 年，对日本 24 所随机选择的学校（10 所初中和 14 所高中）的学生进行了基线调查。2 年后，对相同学生进行了后续调查。问卷包括以下五个项目：基本属性、睡眠状况、生活方式因素、社会关系和心理健康状况。仅将基线时没有“睡眠质量差”的参与者纳入分析，并通过观察随访时睡眠质量差的比率来计算睡眠质量差的发生率。共有 3473 名学生被纳入分析。在随访研究前的 2 年中，初中和 6 岁睡眠质量差的发生率为 7.7%。9% 的高中生。多因素分析显示，初中生心理健康状况差、没有课外学习、平日睡眠时间短，以及心理健康状况差、平日7:00或晚起床、平日睡眠时间短是导致睡眠质量差的因素。高中生的平日。在初中生，心理健康状况、课外学习和睡眠时间可能是睡眠质量差的预测因素，而在高中生，心理健康状况、清醒时间和工作日睡眠时间可能是预测因素。目前的研究结果表明，应该在初中和高中生中促进睡眠健康。多因素分析显示，初中生心理健康状况差、没有课外学习、平日睡眠时间短，以及心理健康状况差、平日7:00或晚起床、平日睡眠时间短是导致睡眠质量差的因素。高中生的平日。在初中生，心理健康状况、课外学习和睡眠时间可能是睡眠质量差的预测因素，而在高中生，心理健康状况、清醒时间和工作日睡眠时间可能是预测因素。目前的研究结果表明，应该在初中和高中生中促进睡眠健康。多因素分析显示，初中生心理健康状况差、没有课外学习、平日睡眠时间短，以及心理健康状况差、平日7:00或晚起床、平日睡眠时间短是导致睡眠质量差的因素。高中生的平日。在初中生，心理健康状况、课外学习和睡眠时间可能是睡眠质量差的预测因素，而在高中生，心理健康状况、清醒时间和工作日睡眠时间可能是预测因素。目前的研究结果表明，应该在初中和高中生中促进睡眠健康。高中生平日7:00及以后起床，平日睡眠时间短。在初中生，心理健康状况、课外学习和睡眠时间可能是睡眠质量差的预测因素，而在高中生，心理健康状况、清醒时间和工作日睡眠时间可能是预测因素。目前的研究结果表明，应该在初中和高中生中促进睡眠健康。高中生平日7:00及以后起床，平日睡眠时间短。在初中生，心理健康状况、课外学习和睡眠时间可能是睡眠质量差的预测因素，而在高中生，心理健康状况、清醒时间和工作日睡眠时间可能是预测因素。目前的研究结果表明，应该在初中和高中生中促进睡眠健康。