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. 2019 Oct 14;43(3):zsz250. doi: 10.1093/sleep/zsz250

Table 2.

Means and standard deviations for main variables by study

Variables ACES (N = 191) DESTRESS (N = 135) p-value
Stress
 Morning 2.08 (1.50) 2.06 (1.65) .91
 Afternoon 2.47 (1.65) 2.22 (1.54) .17
 Evening 2.32 (1.60) 2.10 (1.61) .22
Actigraphic sleep
 Total sleep time (hours) 7.32 (0.97) 7.33 (0.92) .91
 Sleep onset latency (mins) 7.14 (4.24) 5.61 (4.66) .01
 Wake after sleep onset (mins) 57.55 (28.19) 52.95 (24.18) .22
 Sleep efficiency (%) 87.27 (4.98) 88.52 (4.45) .90
 Time in bed (hours) 8.40 (1.11) 8.31 (1.03) .56
Self-reported sleep
 Total sleep time (hours) 7.86 (0.94) 7.75 (1.14) .34
 Sleep onset latency (mins) 28.72 (35.36) 27.68 (34.26) .79
 Wake after sleep onset (mins) 9.64 (12.14) 9.84 (14.30) .22
 Sleep efficiency (%) 93.00 (0.05) 93.00 (0.06) .06
 Time in bed (hours) 8.46 (1.15) 8.32 (1.08) .27
Sleep Disturbance Index (T-score) 46.89 (8.15) 48.50 (6.10) .05
Proportion of Missing Daily Surveys 0.08 (0.09) 0.13 (0.13) <.001

Note. The actigraphic and self-reported sleep efficiency, sleep onset latency, and wake after sleep onset presented are raw and untransformed values. p-Values are based on independent samples t-tests after first averaging values for each participant.