Table 1.

Baseline characteristics for all patients on methadone treatment as of 22 August 2011 at the Muhimbili Medication Assisted Treatment Program, Dar es Salaam, Tanzania^*

	All registered patients (n =222)	Enrolled patients (n = 150)	Non-enrolled patients (n = 72)
Characteristics	n (%)	n (%)	n (%)	P value
Age, years, mean ± SD	33.3 ± 5.7	34.1 ± 5.9	31.5 ± 5.1	0.002
Male	204 (92)	139 (93)	65 (90)	0.54
HIV-positive	42 (19)	34 (23)	8 (11)	0.03
Previous arrest or charge	138 (62)	88 (59)	50 (69)	0.12

^*All information taken from chart review.

SD = standard deviation; HIV = human immunodeficiency virus.