pctlt75 - Search - Sleep Data - National Sleep Research Resource

Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography

pctlt75 under Sleep Monitoring/Polysomnography/Sleep Architecture in CCSHS variables

Ratio of the number of minutes with oxygen saturation (SaO2) under 75% to the total sleep time expressed in hours.

Percent of total sleep duration with oxygen saturation < 75% from type I polysomnography

pctdursp_salt75_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography

pctsa75h under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables

Percentage of total estimated sleep duration with < 75% oxygen saturation from type III home sleep apnea test

pctdursp_salt75_f1t3 under Sleep Monitoring/Polysomnography/Oxygen Saturation in NUMOM2B variables

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

Percent total sleep duration with below 75% oxygen saturation from type II polysomnography

pctsa75h under Sleep Monitoring/Polysomnography/Sleep Architecture in SOF variables

Percent total sleep duration with below 75% oxygen saturation from type II polysomnography

pctsa75h under Sleep Monitoring/Polysomnography/Sleep Architecture in SHHS variables

Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography

pctsa75h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

[(total time oxygen saturation (SaO2) is < 75%) / (Total Sleep Time (TST))] * 100