Table 1 Demographic data and substance use history of methadone maintained, protracted abstinence and non-dependent comparison groups, using Chi-squared testing (χ2) for categorical variables, and ANOVA (F) for continuous variables.
From: Character pathology and neuropsychological test performance in remitted opiate dependence
| Â | Methadone Maintained (n = 29) | Protracted Abstinence (n = 27) | Comparison (n = 28) | Statistics | Significance |
|---|---|---|---|---|---|
Gender | Â | Â | Â | Â | Â |
   Male | 23 (79.3%) | 20 (74%) | 21(72.4%) | χ2 = 0.49 | p = 0.78 |
   Female | 6 (20.7%) | 7 (26%) | 8 (27.6%) | df = 2 |  |
Ethnicity | Â | Â | Â | Â | Â |
   African American | 6 (20.7%) | 11 (40.7%) | 10 (34.7%) |  |  |
   European American | 11 (37.9%) | 7 (25.9%) | 12 (41.4%) |  |  |
   Hispanic | 12 (41.4%) | 7 (25.9%) | 3 (10.3%) | χ2 = 14.95 df = 10 | p = 0.13 |
   Asian | 0 (0%) | 0 (0%) | 1 (3.4%) |  |  |
   Native Am./Pacific Islands | 0 (0%) | 0 (0%) | 1 (3.4%) |  |  |
   Other | 0 (0%) | 2 (7.5%) | 2 (6.8%) |  |  |
Age Years: Mean ± S.D. | 37.93 ± 7.5 | 42.59 ± 5.4 | 34.00 ± 8.0 | F(2,84) = 10.21 | p < 0.001 |
Education Years: Mean ± S.D. | 13.03 ± 4.8 | 11.81 ± 2.2 | 15.51 ± 1.8 | F(2,84) = 9.32 | p < 0.001 |
Substance Use History | Â | Â | Â | Â | Â |
Mean ± S.D. |  |  |  |  |  |
   Age of Onset: Years | 19.36 ± 5.5 | 23.32 ± 8.9 | N/A | F = 3.88; df = 1 | p = 0.054 |
   Years of heroin use | 14.72 ± 8.9 | 14.68 ± 9.0 | N/A | F = 0.00 df = 1 | p = 0.98 |
   Daily dollar amount: $ | 122.96 ± 105.09 | 124.57 ± 115.90 | N/A | F = 0.003 df = 1 | p = 0.959 |
Substance Treatment History | Â | Â | Â | Â | Â |
Mean ± S.D. |  |  |  |  |  |
   Years of MM | 6.48 ± 7.03 | 6.85 ± 6.80 | N/A | F = 0.038 df = 1 | p = 0.847 |
   Highest methadone dose (mg/day) | 88.21 ± 25.54 | 83.68 ± 30.22 | N/A | F = 0.307 df = 1 | p = 0.582 |
   Years of opiate abstinence | N/A | 0.89 ± 0.37 | N/A | N/A |  |