Sleep Duration Associated with the Lowest Risk of Depression/Anxiety in Adolescents.

ABSTRACT:

Study objectives

To investigate sleep duration associated with the least depression/anxiety in adolescence.

Methods

Grades 7-12 Japanese students (n = 18,250, aged 12-18 y) from public junior high/high schools were studied in a cross-sectional design. Due to missing/implausible data, 15,637 out of the 18,250 students were statistically analyzed. Relationship between sleep duration on school nights and depression/anxiety, measured using self-report questionnaires, including the General Health Questionnaire-12 (GHQ-12), were studied by sex and grade, controlling for bedtime regularity.

Results

When sleep duration was classified by 1-h intervals, rate of adolescents with a GHQ-12 score ≥ 4 was the lowest in males and females who slept 8.5-9.5 h and 7.5-8.5 h, respectivel

SUBMITTER: Ojio Y 

PROVIDER: S-EPMC4945315 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature