Match CalculationsVersion en ligne Match the calculation to the correct term par Kelly Cummins 1 (Number of events / total sleep time) x 60 2 (amount of sleep for a stage / total sleep time) x 100 3 Lights out minus lights on 4 (Sleep onset minus lights out) + time awake after sleep onset 5 N1 + N2 +N3 +R 6 (Total sleep time / total recording time) x 100 7 REM onset epoch minus sleep onset epoch / 2 Apnea hypopnea index (AHI) Obstructive apnea index (OI) Hypopnea index (HI) limb movement index periodic limb movement index (PLMI) Central apnea index (CI) Percent stage N1 Percent stage N2 Percent stage N3 Percent stage R Total Recording time (TRT) Time in Bed (TIB) Total wake time (TWT) Wake Before Sleep Onset + WASO Total Sleep Time (TST) Total Recording time minus Total Wake Time (TWT) Sleep efficency percentage of night actually spent asleep (N1 + N2 + N3 +R / Lights out minus lights on) x 100 REM latency REM onset minutes minus sleep onset minutes
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