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 | |
| 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 | |
| slpprdp |
Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from type II polysomnography
Conventionally this variable would be called total sleep time (TST)(i.e. total time spent in stage 1 or greater). |
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 |