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. 2021 Nov 12;3(2):389–399. doi: 10.1007/s42761-021-00079-1

Table 2.

Descriptive sleep data is presented. Subjects in the zolpidem compared to placebo condition spent more time in stage 3 and less time in REM

Placebo Zolpidem
Mean (min) SD Mean (min) SD
TST 536.48 48.12 538.37 39.67
Stage 1 14.16 8.52 13.625 11.69
Stage 2 282.804 54.36 287.78 47.33
Stage 3 110.82 39.83 121.21* 40.78
REM 128.67* 32.29 115.28 28.48
WASO 31.3 27.6 25.73 26.00
SE 92.39 5.64 93.26 4.88

Table represents mean and standard deviation of each sleep parameter for placebo and zolpidem conditions. Each stage is calculated in minutes. Asterisks represent significance at p < 0.05