Methods With Pittsburg Sleeping Quality Index (PSQI), 618 senior middle school students participated in the investigation and completed a questionnaire by self-report in a cross-sectional study.

• 方法采用匹茨堡睡眠质量指数问卷(PSQI)对北京市海淀区6所学校618名高中生的睡眠情况进行调查。