Sleep behavior of South African adolescents

To survey a large group of South African adolescents about their sleep behavior, daytime behaviors, and morning alertness as compared to those of other teenagers worldwide. Subjects completed a questionnaire about their sleep habits and daytime behaviors on the previous day, and subjective morning alertness at the time of completing the questionnaire. Four secondary schools in Johannesburg, South Africa on mid-week mornings. 825 secondary school students volunteered for this study. N/A. The students, (16+/-1 years), 61% female, reported significantly less time in bed (p