Table 1.

Pre-to-Post Changes During the 6-Month Active Phase Treatment: Comparisons between Patient Subgroups.

Outcome Variable / Change Criterion	Patient Subgroup			Test (significant comparisons)
	1. Common and Fast Responders (n = 169)	2. Moderate Responders (n = 111)	3. Severe Users (n = 42)
ASI–Drug Use Composite Score
d	1.99	1.19	0.92	p < .001a (1.–2.) (1.–3.)
No. Reliably Improved (%)	117 (69 %)	46 (41 %)	18 (43 %)	p < .001b
Number of Days Using Cocaine During the Past 30 Days
Reduction in the Number of Daysc	8.75 (7.71)***	6.05 (7.15)***	6.60 (9.51)***	p < .05a (1.–2.)

Note: ASI = Addiction Severity Index; d = pre-to-post effect size (Cohen's d).

^aAnalysis of variance with post-hoc comparisons.

^bχ²-test.

^ct-test to compare pre-to-post active phase treatment change within patient subgroups.

^***p < .001.