Table 3.

Polysomnographic-defined sleep onset measures (mean (SD)) derived from a single night recording in adolescent boys and girls

		Boys Mean (SD)	Girls Mean (SD)
Sleep onset	Bedtime, hour:minutes	22:50 (00:46)	22:52 (00:43)
	SOL-A, minutes	11.9 (13.6)	16.1 (16.5)*
	SOL-B, minutes	14.5 (14.5)	19.8 (17.3)*
	SOL-C, minutes	14.8 (14.5)	21.3 (17.4)*

Sleep onset latency (SOL; -A, first epoch of any sleep stage; -B, first epoch of N2 sleep; -C, first epoch of first four consecutive epochs of stable sleep [N2/N3]).

*Significant sex main effects on sleep onset outcomes.