Table 4.

Interaction odds ratios (abstinence) and incidence rate ratios (days of use) with primary outcome of stimulant substance use within a 30-day window of assessment.

	Logistic Portion of Model (Abstinence vs. Non- Abstinence)		Model-based average predicted probabilities of abstinence for stimulant substance use within each 30-day window
Assessment Time Points	Odds Ratio	95% CI for Odds Ratio	TAU	STAGE-12	Total
Mid-Treatment (30-day)	3.34**	1.20, 9.28	0.57	0.71	0.64
End-of-Treatment (60-day)	2.44*	1.01, 5.86	0.61	0.72	0.66
1st Follow-up (90-day)	1.78	0.81, 3.90	0.66	0.72	0.69
2nd Follow-up (120-day)	1.30	0.60, 2.79	0.70	0.72	0.71
3rd Follow-up (150-day)	0.95	0.42, 2.15	0.73	0.73	0.73
Last Follow-up (180-day)	0.69	0.27, 1.77	0.77	0.73	0.75
	Negative Binomial Portion of Model (Count of Non-zero Use)		Model-based average predicted values of number of days of stimulant substance use within each 30-day window
Assessment Time Points	Rate Ratio	95% CI for Rate Ratio	TAU	STAGE-12	Total
Mid-Treatment (30-day)	1.66*	1.05, 2.60	1.08	1.19	1.13
End-of-Treatment (60-day)	1.50*	1.01, 2.24	1.28	1.34	1.31
1st Follow-up (90-day)	1.36	0.93, 1.98	1.51	1.50	1.51
2nd Follow-up (120-day)	1.23	0.84, 1.79	1.77	1.69	1.73
3rd Follow-up (150-day)	1.11	0.74, 1.66	2.05	1. 90	1.98
Last Follow-up (180-day)	1.00	0.64, 1.57	2.35	2.13	2.25

^*p<.05;

^**p<.025