Table 2.

Effects of drug treatment court participation on two-year recidivism

	Referred			Enrolled			Completed
	Referred but did not enroll (T) vs. not-referred (C)			Enrolled but not complete (T) vs. referred but did not enroll (C)			Completed DTC (T) vs. enrolled but did not complete (C)
	(N t = N c = 1,989)			(N t = N c = 887)			(N t = N c = 600)
	T (%)	C (%)	ATT	T (%)	C (%)	ATT	T (%)	C (%)	ATT
Re-arrest	73.2	71.2	2.0	66.7	75.9	−9.1**	53.3	64.5	−11.2**
Felony	20.8	19.8	1.0	14.0	22.9	−8.9**	6.3	11.8	−5.5**
Misdemeanor	52.4	51.4	1.0	52.8	53.0	−0.2	47.0	52.7	−5.7*
Re-arrest for a substance-related offense	31.9	31.0	0.9	24.4	35.1	−10.7**	17.3	23.0	−5.7*
Felony	13.8	13.5	0.3	9.4	15.2	−5.9**	4.2	8.3	−4.2**
Misdemeanor	18.0	17.4	0.6	15.0	19.8	−4.8**	13.2	14.7	−1.5
Re-arrest for a violent offense	8.5	6.8	1.7*	7.1	8.1	−1.0	4.0	6.5	−2.5
Felony	2.1	1.6	0.5	1.6	2.1	−0.6	0.2	1.5	−1.3*
Misdemeanor	6.5	5.2	1.3	5.5	6.0	−0.5	3.8	5.0	−1.2

Note: **p < 0.01, *p < 0.05; T = treatment; C = comparison; ATT = Average treatment effect on the treated.

ATTs were calculated using t-tests following propensity score matching.