Table 2.
Demographic information for the opioid-addicted and control groups; SD in parenthesis.
| Opioid-Addicted | Controls | |
|---|---|---|
| N | 33 | 32 |
| Gender distribution | 18 males / 15 females | 22 males / 10 females |
| Mean age (in years) | 39.3 (8.2) | 35.0 (12.1) |
| Educational level (in years) | 9.4 (1.6) | 13.0 (1.6) * |
| Mean methadone dose (in mg) | 75.5 (33.5) | N/A |
| Mean admission time to clinic (in years) |
4.6 (3.6) | N/A |
| Mean duration of addiction to heroin (in years) |
14.9 (3.7) | N/A |
Asterisk indicates significant group difference, p<.05.