BPN/VPA – group | CLN/CBZ – group | |
---|---|---|
Gender: Male (%) | 42% | 76% |
Mean age (range) | 28 (21–41) | 38 (26–44) |
Substance use: | ||
First time heroin use (mean age) | 19 | 18 |
First time injected drugs (mean age) | 20 | 18 |
Years of heroin use (mean years) | 7 | 18 |
Years of BZD use (mean years) | 13 | 19 |
Years of cannabis use (mean years) | 14 | 22 |
Years of amphetamine use (mean years) | 7 | 19 |