ststartp tmremp

Related Variables

nsrr_ttlprdbd_f1 Total period of bed (i.e., time in bed) from polysomnography

Harmonized by the NSRR team. Source: :timebedp: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
period Polysomnography (PSG) Quality Assessment: Periodic breathing (5 min)

Scorer observed periodic breathing for a period of at least 5 minutes during study.

 		Sleep Monitoring/Polysomnography/Signal Quality
slp_eff Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type II 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).

Percentage of time in bed that was spent sleeping, or the ratio of total sleep time to total time in bed, expressed as a percentage.

 		Sleep Monitoring/Polysomnography/Sleep Architecture