| Wave 1 (2011) | Wave 2 (2013) |  | ||
---|---|---|---|---|---|
(NÂ =Â 7305) | (NÂ =Â 8107) | ||||
White | Mexican American | White | Mexican American | p a | |
Client variables | (n = 4050) | (n = 3255) | (n = 4232) | (n = 3875) |  |
Treatment completion, n (%)* | 749 (18.5) | 695 (21.4) | 483 (11.5) | 589 (15.5) | < .001 |
Female, n (%)* | 1529 (37.8) | 1147 (35.3) | 1666 (39.4) | 1384 (36.0) | .166 |
Age, M (SD) | 38.1 (12.9) | 34.4 (11.7) | 38.8 (13.1) | 34.9 (12.3) | .011 |
Education, n (%)* | Â | Â | Â | Â | < .001 |
 Less than high school | 150 (3.7) | 284 (8.7) | 121 (2.9) | 299 (7.8) |  |
 High school | 2647 (65.4) | 2612 (80.3) | 680 (16.1) | 1676 (43.5) |  |
 College | 1174 (29.0) | 347 (10.7) | 2077 (49.1) | 1497 (38.8) |  |
 Postgraduate | 79 (2.0) | 12 (0.4) | 1354 (32.0) | 385 (10.0) |  |
Primary drug, n (%)* | Â | Â | Â | Â | < .001 |
 Heroin | 1251 (30.9) | 652 (20.0) | 1337 (31.6) | 886 (23.0) |  |
 Alcohol | 1144 (28.3) | 678 (20.8) | 1157 (27.3) | 653 (16.39) |  |
 Methamphetamine | 737 (18.2) | 1111 (34.1) | 918 (21.7) | 1401 (36.3) |  |
 Marijuana or hashish | 288 (7.1) | 478 (14.7) | 213 (5.0) | 635 (16.5) |  |
 Other | 630 (15.6) | 336 (10.3) | 607 (14.3) | 282 (7.3) |  |
Days used, M (SD)*b | 16.0 (13.0) | 11.1 (12.8) | 18.1 (12.8) | 12.5 (13.1) | < .001 |
Age at first use, M (SD)* | 20.7 (8.8) | 19.3 (7.4) | 20.6 (8.6) | 19.1 (7.2) | .107 |
Medicaid eligible, n (%)* | 988 (24.4) | 997 (30.6) | 591 (14.0) | 1186 (30.8) | < .001 |
Mental health disorder, n (%)* | 1380 (34.1) | 612 (18.8) | 1754 (41.5) | 741 (19.2) | < .001 |
Treatment type | Â | Â | Â | Â | < .001 |
 Outpatient | 1635 (40.4) | 1983 (60.9) | 1257 (29.7) | 2011 (52.1) |  |
 Methadone | 162 (4.0) | 159 (4.9) | 226 (5.3) | 301 (7.8) |  |
 Residential | 2253 (55.6) | 1113 (34.2) | 2749 (65.0) | 1545 (40.1) |  |
Program variables | (n = 122) |  | (n = 112) |  |  |
Medicaid payment, n (%) | 85 (70.8) | Â | 65 (62.5) | Â | < .001 |
Licensed, n (%) | 115 (85.0) | Â | 98 (95.1) | Â | < .001 |
Accredited, n (%)c | 20 (16.8) | Â | 25 (24.5) | Â | < .001 |