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Table 3 Sleep outcomes: PSG-derived data, sleep time and stages

From: Characterisation of sleep in intensive care using 24-hour polysomnography: anobservational study

Outcomes (n = 53)
Duration of PSG recording, median (IQR), hh:mm 24:00 (23:37-24:00)
TSTa, median (IQRb), hh:mm 05:00 (02:52-07:14)
Duration of sleep without waking, median (IQR), hh:mm 00:03 (00:02-00:05)
Number of sleep periods, median (IQR) 38.00 (19.00-56.50)
Sleep during daytime hours, median (IQR), % 41 (24-55)
Stage 1, median (IQR), hh:mm 01:00 (00:22-01:31)
Stage 1, median (IQR), % 19 (8-31)
Stage 2, median (IQR), hh:mm 03:03 (01:36-05:19)
Stage 2, median (IQR), % 73 (58-87)
Slow wave sleep, median (IQR), hh:mm 00:00 (00:00-00:04)c
Slow wave sleep, median (IQR), % 0 (0-1)c
REMd, median (IQR), hh:mm 00:00 (00:00-00:21)e
REM, median (IQR), % 0 (0-6)e
Arousals, median (IQR), No. per hr 27.00 (14.00-37.50)
  1. aTST, total sleep time; bIQR,interquartile range; crange = 00:00-01:58, 0-39%;dREM, rapid eye movement; erange= 00:00-01:52, 0-22%.