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Table 2 Sleep parameters in patients with NIV success and NIV failure (study 1)

From: Sleep continuity: a new metric to quantify disrupted hypnograms in non-sedated intensive care unit patients

Parameters

NIV Success (number = 10)

NIV failure (number = 6)

P value

TST (minutes)

423 (359 to 458)

328 (274 to 422)

0.3

Stage N1 (%)

16 (12 to 20)

17 (9 to 23)

0.6

Stage N2 (%)

45 (35 to 50)

61 (55 to 63)

0.2

Stage N3 (%)

12 (8 to 17)

13 (6 to 16)

0.6

REM (%)

11 (6 to 14)

3 (3 to 6)

0.1

Fragmentation (n/h)

27 (20 to 30)

36 (31 to 43)

0.1

  1. Fragmentation, number of arousals and awakenings per hour of sleep; values are median (25th to 75th percentiles). P values from the Mann–Whitney test. NIV: non-invasive ventilation; REM: rapid eye movement; TST: total sleep time.