Table 1.

Participant Characteristics (N=297)

	Percent	Mean (SD)
Baseline Characteristics
Age (in years)		46.6 (6.5)
Female gender	38.1% (n=113)
Injection drug user	23.2% (n=69)
Cocaine+ urine at baseline	48.8% (n=145)
Previous buprenorphine treatment experience	50.5% (n=150)
Buprenorphine Dose
Modal Buprenorphine Dose		13.6 (4.5)
Expected Treatment Duration
Expected Treatment Duration (weeks)		23.9 (5.0)
Wants to stay on Buprenorphine < 6 m.	28.0% (n=83)
Actual Treatment Duration
Days in Treatment (days up to 180)		127.0 (68.9) [in weeks: 18.3 (10.0)]
Left treatment within 6 months	42.1% (n=125)