Table 3.

Sleep Diary Measures

	BBTI		IC
Characteristic	Pretreatment/ Posttreatment, Mean (SD)	Difference (SE) [95% CI]	Pretreatment/ Posttreatment, Mean (SD)	Difference (SE) [95% CI]	BBTI−IC Difference (SE) [95% CI], Cohen d Effect Size
Bed time, min from midnight	−35.19 (8.33)/−19.87 (7.90)	15.32 (5.49) [4.40 to 26.25]	−26.60 (8.18)/−32.41 (7.80)	−5.81 (5.35) [−16.47 to 4.84]	21.14 (7.66) [5.88 to 36.40], 0.63
Morning rise time, min from 7:00 AM	−24.12 (11.59)/−57.18 (10.21)	−33.06 (7.41) [−47.82 to −18.30]	−5.43 (11.39)/−19.10 (10.08)	−13.67 (7.22) [−28.05 to 0.71]	−19.39 (10.35) [−39.99 to 1.22], 0.43
Time spent in bed, min	448.42 (11.27)/396.05 (9.90)	−52.36 (7.64) [−67.58 to −37.14]	456.65 (11.06)/447.60 (9.77)	−9.05 (7.45) [−23.89 to 5.78]	−43.31 (10.67) [−64.56 to −22.05], 0.93
Sleep latency, min	42.54 (4.49)/19.71 (3.17)	−22.83 (3.71) [−30.21 to −15.44]	31.17 (4.40)/30.17 (3.10)	−1.00 (3.59) [−8.15 to 6.15]	−21.83 (5.16) [−32.11 to −11.55], 0.96
Wake after sleep onset, min	52.06 (5.51)/28.02 (5.16)	−24.04 (5.76) [−35.51 to −12.58]	51.08 (5.31)/47.67 (5.03)	−3.41 (5.55) [−14.47 to 7.64]	−20.63 (8.00) [−36.56 to −4.71], 0.59
Total sleep time, min	342.57 (10.89)/339.47 (10.64)	−3.11 (8.07) [−19.18 to 12.97]	355.04 (10.61)/358.39 (10.30)	3.36 (7.77) [−12.11 to 18.82]	−6.46 (11.20) [−28.77 to 15.84], 0.13
Sleep efficiency, %	78.58 (1.57)/87.33 (1.53)	8.75 (1.55) [5.66 to 11.84]	81.05 (1.53)/82.25 (1.47)	1.21 (1.50) [−1.77 to 4.19]	7.54 (2.16) [3.25 to 11.83], 0.80
Sleep quality, 0–100	51.03 (2.24)/64.39 (2.46)	13.35 (2.63) [8.11 to 18.59]	51.79 (2.18)/55.15 (2.43)	3.36 (2.58) [−1.77 to 8.50]	9.99 (3.68) [2.65 to 17.32], 0.62

Abbreviations: BBTI, brief behavioral treatment for insomnia; CI, confidence interval; IC, information control.