TABLE 1.
Demograpic and clinical characteristics of subjects
| Characteristic | Short-term heroin abstinence (n = 18) | Long-term heroin abstinence (n = 19) | p-value from ANOVA |
|---|---|---|---|
| Age (years ± SD) | 33.2 ± 1.4 | 31.6 ± 1.4 | 0.415 |
| Education (years ± SD) | 7.7 ± 0.7 | 8.1 ± 0.4 | 0.662 |
| Duration of heroin use (years ± SD) | 7.0 ± 1.0 | 8.2 ± 1.1 | 0.430 |
| Average heroin dose (g/day ± SD) | 0.7 ± 0.2 | 0.7 ± 0.1 | 0.818 |
| Duration of current abstinence (months ± SD) | 1.2 ± 0.1 | 13.6 ± 0.4 | 0.000 |
| Duration of smoking (years ± SD) | 12.9 ± 1.4 | 13.8 ± 1.2 | 0.632 |
| Daily cigarettes | 32.4 ± 3.5 | 29.8 ± 2.7 | 0.561 |
| Depression | 13.1 ± 1.5 | 9.8 ± 1.7 | 0.158 |
| Anxiety | 16.3 ± 2.5 | 10.7 ± 2.2 | 0.100 |
| Withdrawal symptoms | 23.5 ± 3.4 | 11.6 ± 1.8 | 0.004 |