Table 3.

Treatment group comparisons in cocaine dependent patients

Group	Outcome	N	Chi-Square	P	OR/BETA(d)	CI
Not engaged at 2 weeks	Any Cocaine Use	159	2.25	.13	0.66	0.38 1.14
	% Days cocaine use	159	0.10	.75	−0.13 (d= −.04)	−0.94 0.60
	Cocaine urine toxicology	159	0.03	.86	1.05	0.61 1.80
Disengaged weeks 3–8	Any Cocaine Use	69	0.14	.71	0.83	0.33 2.12
	% Days cocaine	69	2.02	.16	−0.84 (d= −.37)	−1.98 0.30
	Cocaine urine toxicology	69	0.13	.74	1.17	0.50 2.77
Disengaged at weeks 2 and 8	Any Cocaine Use	84	0.85	.36	1.48	0.64 3.40
	% Days cocaine	84	0.65	.42	0.60 (d= .22)	−0.85 2.04
	Cocaine urine toxicology	84	2.20	.14	2.00	0.82 – 4.91

Treatment contrasts for MI-IOP vs. MI-PC coded as MI-IOP=1; MI-PC=0. Contrasts for MI-PC vs. no further outreach coded as MI-PC=1; no further outreach= 0.

Models include binary indicators of Site (VA versus nonVA), Study (P01 versus P60), and a nominal indicator for study month.

Effect sizes are indicated by Odds Ratios (OR) for the dichotomous outcomes and BETA and Cohen’s d values for continuous outcomes. CI= confidence intervals