Table 2.

Treatment Completion and Dropout Reasons (%)

	Buprenorphine/Naloxone	Methadone	Total
	(n=738)	(n=529)	(n=1,267)
Dropout during the first 30 days of treatment, %**	24.8	8.3	17.9
Completed the 24-week trial, %**	46.1	74.1	57.8
Retention (days in treatment), Mean (SD)**	103.8 (66.9)	141.3 (50.8)	119.4 (63.5)
Dropout reasons, %**	n=398	n=137	n=535
Missed 14 or more days	63.1	68.6	64.5
No longer wish to participate	25.6	12.4	22.2
Administrative discharged	3.5	4.4	3.7
Not medically appropriate	3.8	3.7	3.7
Other reasons (incarceration, moved)	4.0	11.0	5.8
Participants who stayed in treatment more than 30 days	n=555	n=529	n=1,040
Completed the 24-week trial, % **	61.3	80.8	70.4
Retention (days in treatment), Mean (SD) **	133.3 (49.2)	152.8 (34.8)	142.4 (44.1)

^**P<0.01