Table 1.

Participant characteristics within and between pooled and independent samples (N = 178)

	Total N (%)	MMT Clinic n (%)	HIV Care n (%)	Difference Test t-test or χ² value
Sample size	N=178	n = 93	n = 85	n/a
Mean Age (SD)	43.51 (11.33)	38.10 (10.21)	49.43 (9.34)	−7.68 ^**
Gender				0.40
Male	94 (52.8%)	47 (50.5%)	47 (53.3%)
Female	84 (47.2%)	46 (49.5%)	38 (44.7%)
Race/Ethnicity
Hispanic	60 (33.7%)	13 (14.0%)	47 (55.3%)	33.93^***
non-Hispanic Black	46 (25.8%)	13 (14.0%)	33 (38.8%)	14.30^***
non-Hispanic White	64 (36.0%)	63 (67.7%)	1 ( 1.2%)	85.45^***
non-Hispanic Other	8 ( 4.5%)	4 ( 4.3%)	4 ( 4.7%)	0.02
Primary Language				25.16^***
English	143 (80.3%)	88 (94.6%)	55 (64.7%)
non-English	35 (19.7%)	5 ( 5.4%)	30 (35.3%)
Sexual Orientation^§				5.53 ^*
Heterosexual	144 (85.2%)	77 (91.7%)	67 (78.8%)
Gay or Bisexual	25 (14.8%)	7 ( 8.3%)	18 (21.2%)
SES Factors
No GED/Diploma	67 (37.6%)	30 (32.3%)	37 (43.5%)	2.40
Unemployed^§	126 (74.6%)	62 (73.8%)	64 (75.3%)	0.50
On disability/SSI^§	66 (39.1%)	17 (20.2%)	49 (57.6%)	24.84^***
Income < $20K/yr.^§	137 (88.1%)	74 (88.1%)	63 (74.1%)	5.38 ^*
Unstable housing^§	15 ( 8.9%)	8 ( 9.5%)	7 ( 8.2%)	0.07
Injection Drug Use
Lifetime	99 (55.6%)	73 (78.5%)	26 (30.6%)	41.29^***
Recent ^†	16 ( 9.0%)	11 (11.8%)	5 ( 5.9%)	1.92
Opiate Use
Lifetime	130 (73.0%)	93 (100%)	37 (43.5%)	97.91^***
Recent ^†	27 (15.2%)	20 (21.5%)	7 ( 8.2%)	6.08 ^*
Crack/Cocaine Use
Lifetime	145 (81.5%)	89 (95.7%)	56 (65.9%)	26.14^***
Recent ^†	40 (22.5%)	31 (33.3%)	9 (10.6%)	13.19^***
Opiate Replacement Therapy
History of ORT	111 (62.4%)	82 (88.2%)	29 (35.1%)	55.28^***
Currently on ORT	103 (57.9%)	83 (89.2%)	20 (23.5%)	78.67^***

^§

9 participants in MMT sample had missing values on this variable.

^†

Recent use (MMT = past 30 days, HIV = past 3 mo.).

Difference test is significant at the 0.001 (***), 0.01 (**), or 0.05 (*) level (2-tailed).