Table 1. . Subject characteristics.
| Treatment group | Subjects recruited (NR) | Caucasian (self-report) | Caucasian (AIMs) | Subjects excluded (DNA low quality) | Subjects analyzed (NA) | Mean age ± SD | Female (%) |
|---|---|---|---|---|---|---|---|
| HC | 197 | 168 | 158 | 5 | 153 | 39 ± 10 | 44 |
| NOD | 198 | 171 | 166 | 3 | 163 | 40 ± 9 | 35 |
| OD | 400 | 289 | 285 | 4 | 281 | 43 ± 8 | 25 |
| Total | 795 | 628 | 609 | 12 | 597 | 42 ± 10 | 32 |
AIM: Ancestry informative markers; HC: Healthy control; NOD: Not opioid dependent; NR: Number recruited; OD: Opioid dependent; SD: Standard deviation.
Adapted with permission from [30].