. Author manuscript; available in PMC: 2011 Jul 6.

Published in final edited form as: J Addict Res Ther. 2011 May 13;2(2):2–10. doi: 10.4172/2155-6105.1000109

Table 3.

Random Effects Regression Results for Repeated Primary Outcome Measures.

	Unstandardized Parameter Estimate (95% CI)
	Outcome Variables (Unadjusted)			Outcome Variables (Adjusted)
Predictor Variables	BDI-II Depressiona	HAM-D Depressiona	Proportion Illicit Drug Use Days	BDI-II Depressiona	HAM-D Depressiona	Proportion Illicit Drug Use Days
Intercept	2.15 (1.82, 2.47)	1.90 (1.63, 2.18)	0.27 (0.16, 0.38)	2.11 (1.79, 2.43)	1.88 (1.60, 2.15)	0.16 (–0.02, 0.34)^b 0.03 (–0.15, 0.21)^c
Linear Slope Baseline -6 months	–0.01 (–0.15, 0.13)	0.02 (–0.09, 0.14)	–0.004 (–0.05, 0.04)	–0.02 (–0.15, 0.10)	0.01 (–0.09, 0.12)	–0.003 (–0.05, 0.04)^b –0.01 (–0.05, 0.04)^c
Baseline Treatment Difference	0.27 (–0.20, 0.74)	0.34^* (–0.06, 0.75)	–0.13 (–0.29, 0.04)	0.16 (–0.31, 0.63)	0.27(–0.13, 0.67)	–0.14^* (–0.30, 0.02)^b –0.17^* (–0.33, −0.02)^c
Treatment Difference in Linear Slope Base- line–6 months	–0.12 (–0.32, 0.09)	–0.09 (–0.26, 0.08)	0.01 (–0.06, 0.08)	–0.12 (–0.31 0.07)	–0.09 (–0.25, 0.06)	0.02 (–0.05, 0.09)^b 0.02 (–0.05, 0.09)^c

Note: Adjusted parameter estimates control for time-varying antidepressant use for BDI-II and HAM-D outcomes, and for time-varying BDI-IIb and HAM-D^c for the illicit drug use outcome.

log transformed.

p<0.10