Related Variables

sao90awk Total duration of wake time during sleep period with oxygen saturation < 90% from type I polysomnography

Total time oxygen saturation (SaO2) < 90% in awake

Sleep Monitoring/Polysomnography/Oxygen Saturation
sao92awk Total duration of wake time during sleep period with oxygen saturation > 92% from type I polysomnography

Total time oxygen saturation (SaO2) > 92 in awake

Sleep Monitoring/Polysomnography/Oxygen Saturation
stlonp Lights on set by scorer

Lights on time - end of in-bed period set by scorer

Sleep Monitoring/Polysomnography/Signal Quality
rcrdtime Total recording period

total recording time (minutes)

Sleep Monitoring/Polysomnography/Sleep Architecture
slpeffp Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I 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).

[(Total Sleep Time (TST)) / (time from sleep onset to morning waking)] * 100 (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)

Sleep Monitoring/Polysomnography/Sleep Architecture
timebedp Total period of bed (in-bed) from type I polysomnography

Time from lights out to lights on

Sleep Monitoring/Polysomnography/Sleep Architecture
slh1a_12 Time period child was in bed on weekdays? Sleep Questionnaires/Sleep Habits
slh1a_22 Time period child was in bed on weekends? Sleep Questionnaires/Sleep Habits