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Table 2 Average Night 1 and Night 2 objective sleep measures (n = 15)

From: Assessing the daily stability of the cortisol awakening response in a controlled environment

 

Mean

SD

TST (mins)

430.12

26.46

SOL (mins)

14.28

11.07

NWAK

13.87

4.89

WASO (mins)

13.12

6.59

SE (%)

94.02

2.77

Time in REM (%)

22.36

3.20

Time in N1 (%)

3.60

1.20

Time in N2 (%)

53.94

5.15

Time in N3 (%)

20.10

5.02

Latency to REM (mins)

105.87

33.79

Latency to N1 (mins)

14.28

11.07

Latency to N2 (mins)

20.73

12.59

Latency to N3 (mins)

33.73

13.77

  1. Abbreviations: N1: stage 1 sleep, N2: stage 2 sleep, N3: stage 3 sleep, NWAK: number of awakenings, REM: rapid eye movement sleep, SE: sleep efficiency, SOL: sleep onset latency, TST: total sleep time, WASO: wake after sleep onset