Related Variables
| nsrr_ttleffsp_f1 |
Sleep Efficiency: the ratio of sleep duration (i.e., total sleep time, TST) to in-bed period frompolysomnography
Harmonized by the NSRR team. Source: :slp_eff: at Visit 8 |
Harmonized/Polysomnography/Sleep Architecture | |
| 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 | |
| csbre |
Polysomnography (PSG) Quality Assessment: Periodic breathing (10 min)
Scorer observed periodic breathing for a period of at least 10 minutes during study. |
Sleep Monitoring/Polysomnography/Signal Quality | |
| recafsle |
Polysomnography (PSG) Quality Assessment: Data lost - Recording began after sleep
Data was lost at the beginning of sleep period because recording began after sleep onset. |
Sleep Monitoring/Polysomnography/Signal Quality | |
| recbeaw |
Polysomnography (PSG) Quality Assessment: Data lost - Recording ended before wake
Data was lost at the end of sleep period because recording ended before wake. |
Sleep Monitoring/Polysomnography/Signal Quality | |
| rcrdtime |
Total recording period from type II polysomnography
Total recording time (TRT) |
Sleep Monitoring/Polysomnography/Sleep Architecture | |
| 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). |
Sleep Monitoring/Polysomnography/Sleep Architecture | |
| timebedp |
Total period of bed (in-bed) from type II polysomnography
Time from lights out to lights on |
Sleep Monitoring/Polysomnography/Sleep Architecture |