. Author manuscript; available in PMC: 2012 May 23.

Published in final edited form as: Arch Intern Med. 2011 Jan 24;171(10):887–895. doi: 10.1001/archinternmed.2010.535

Table 2.

General Clinical and Sleep Measures

	BBTI		IC

Measurement Scale	Pretreatment/ Posttreatment Score, Mean (SD)	Difference (SE) [95% CI]	Pretreatment/ Posttreatment Score, Mean (SD)	Difference (SE) [95% CI]	BBTI−IC Difference, (SE) [95% CI], Cohen d Effect Size
Hamilton Rating Scale for Depression³⁹	7.46 (0.39)/4.98 (0.48)	−2.48 (0.49) [−3.45 to −1.51]	7.93 (0.39)/7.35 (0.47)	−0.58 (0.47) [−1.52 to 0.37]	−1.91 (0.68) [−3.26 to −0.56], 0.64
Hamilton Anxiety Rating Scale⁴⁰	5.39 (0.36)/3.61 (0.43)	−1.78 (0.38) [−2.54 to −1.02]	5.88 (0.35)/5.10 (0.42)	−0.78 (0.36) [−1.50 to −0.05]	−1.00 (0.53) [−2.05 to 0.05], 0.43
Pittsburgh Sleep Quality Index⁴²	10.44 (0.48)/6.89 (0.48)	−3.55 (0.45) [−4.44 to −2.66]	10.38 (0.47)/9.83 (0.47)	−0.55 (0.44) [−1.42 to 0.32]	−3.00 (0.62) [−4.24 to −1.76], 1.10
Epworth Sleepiness Scale⁴³	6.21 (0.60)/5.90 (0.56)	−0.31 (0.42) [−1.14 to 0.52]	7.29 (0.60)/6.51 (0.55)	−0.78 (0.41) [−1.60 to 0.05]	0.47 (0.59) [−0.71 to 1.64], 0.18
SF-36^37,38	72.51 (2.84)/76.36 (2.77)	3.85 (1.76) [0.35 to 7.34]	67.53 (2.81)/65.20 (2.73)	−2.33 (1.73) [−5.78 to 1.12]	6.18 (2.47) [1.27 to 11.09], 0.57

Abbreviations: BBTI, brief behavioral treatment for insomnia; CI, confidence interval; IC, information control; SF-36, Medical Outcomes Study 36-Item Short Form Health Survey.