Related Variables

	position	Sleep Diary: position slept in most during study	Sleep Monitoring/Polysomnography/Evening and Morning Survey
	canop	Total number of central apnea in NREM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	carop	Total number of central apnea in REM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	hnrop	Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with no oxygen desaturation threshold used and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	hrop	Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with no oxygen desaturation threshold used and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	oanop	Total number of obstructive apnea in NREM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	oarop	Total number of obstructive apnea in REM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	nremepop	Total duration of sleep in NREM sleep in non-supine position from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	remepop	Total duration of sleep in REM sleep in non-supine position from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture