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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: Alcohol Clin Exp Res. 2017 Feb 16;41(4):798–809. doi: 10.1111/acer.13342

Table 5.

Estimated mean levels (SE) of quantitative sleep characteristics by condition and time (N = 42)

Call it a Night®
(n = 21)		 Healthy Behaviors
(n = 21)
M (SE) Intake Week 4 Effect Size Intake Week 4 Effect Size
Sleep Duration (hours) 6.47 (.21) 6.70 (.15) d = .23 6.58 (.13) 6.38 (.18) d = −.32
    Bed time 1:37 (0:16) 1:42 (0:15) d = .10 1:55 (0:13) 1:44 (0:16) d = −.30
    Rise time 8:32 (0:12) 8:46 (0:13) d = .42 8:57 (0:12) 8:46 (0:12) d = −.31
Sleep Efficiency 86.85 (.61) 86.13 (.75) d = −.25 84.88 (1.37) 85.43 (1.13) d = .08

Effect sizes for the difference in drinking and sleep outcomes from intake to 3 months were calculated as the mean differences between the CIAN and HB conditions divided by the pooled standard deviation (Cohen, 1998). A Hedges’ correction corrected for sample size bias (Hedges, 1981).