Table 3.
Demographic and drug use characteristics at baseline (n = 24).
| Methadone (MTD) n = 11 | Buprenorphine (BUP) n = 13 | P-value | |
|---|---|---|---|
| Male (n (%)) | 9 (81%) | 11 (85%) | n.s. |
| African American (n (%)) | 8 (73%) | 7 (54%) | n.s. |
| Age (mean ± SD) | 43.5 ± 8.7 | 40.5 ± 6.8 | n.s. |
| Education in years (median (IQR)) | 12 (12,12) | 12 (11, 12) | n.s. |
| Married (n (%)) | 0 (0%) | 3 (30%) | n.s. |
| Days paid for work in last 30 (mean ± SD) | 3.6 ± 8.4 | 9.2 ± 8.9 | n.s. |
| Usual full-time employment (n (%)) | 4 (44%) | 3 (30%) | n.s. |
| Days cocaine use in last 30 (median (IQR)) | 0 (0, 15) | 0.5 (0, 4) | n.s. |
| Days heroin use in last 30 (mean ± SD) | 19.6 ± 10.4 | 13.5 ± 10.4 | n.s. |
| Days other opiate use in last 30 (mean ± SD) | 4.1 ± 6.0 | 17.7 ± 11.6 | <0.005 |
| Days alcohol use in last 30 (median (IQR)) | 0 (0, 0) | 1 (0, 3) | n.s. |
| Days alcohol intox last 30 (median (IQR)) | 0 (0, 0) | 0.5 (0, 3) | n.s. |
| Years cocaine use (median (IQR)) | 10 (1,20) | 1 (0, 7) | n.s. |
| Years heroin use (mean ± SD) | 17.9 ± 12.0 | 12.3 ± 9.3 | n.s. |
| Years other opiate use (median (IQR)) | 0 (0,2) | 1 (0,7) | n.s. |
| Years alcohol use (median (IQR)) | 4 (0,4) | 1 (0,13) | n.s. |
Categorical variables (gender, ethnicity, marital status, and employment status) were analyzed using Fisher's exact test. Continuous variables were analyzed using student t-tests (normally distributed) and Wilcoxon rank sum tests (nonnormally distributed).