Related Variables

	period	Periodic breathing >= 10 minutes 1=unusual occurrences - periodic breathing > 5 minutes	Sleep Monitoring/Polysomnography/Signal Quality
	slpeffp	Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I polysomnography Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB). [(Total Sleep Time (TST)) / (time from sleep onset to morning waking)] * 100 (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)	Sleep Monitoring/Polysomnography/Sleep Architecture

Childhood Adenotonsillectomy Trial