Table 1.
Characteristics of research participants.
| Control subjects (n = 22) |
MA abusers (n = 30) |
|
|---|---|---|
| Age, y, mean (SD) | 29.96 (8.5) | 39.6 (8.5)a |
| Females | 10 | 12 |
| Subject’s education, y, mean (SD) | 15.86 (1.9) | 12.8 (2.1)a |
| Right-handed | 21 | 24 |
| MA use variables | ||
| Duration, y, mean (SD) | 14.5 (5.8) | |
| Mos abstinent, mean (SD) | 14.4 (15.0) | |
| Age of first use, y, mean (SD) | 20.1 (7.5) | |
| Route of use | ||
| Snort only | 0 | |
| Smoke only | 4 | |
| IV only | 3 | |
| Multiple routes | 23 | |
| Past history of substance abuse | ||
| Tobacco smokers | 4 | 25 |
| Alcohol abusers | – | 16 |
| Mean years since last alcohol use | – | 13.29 (17.9) |
| Cannabis users | – | 16 |
| Mean months since last cannabis use |
– | 10.5 |
| Cocaine abusers | – | 11 |
| Mean years since last cocaine use |
– | 17.89 (6.9) |
| MDMA abusers | – | 0 |
| Opiate abusers | – | 0 |
a
Significantly different from control group.