Table 1.
Demographic and Individual Characteristics of AD and HC Individuals in Study 1 and AD Sample in Study 2
| Study 1 |
Study 2 |
||
|---|---|---|---|
| HC (n=36) |
AD (n=36) |
AD (n=93) |
|
| Demographics | |||
| Male, No. (%) | 23 (63.89) | 28 (77.78) | 65 (69.89) |
| White, No. (%) | 27 (75) | 30 (83.33) | 61 (65.6) |
| Age, y, mean (SD) | 34.86 (9.41) | 36.08 (8.07) | 36.72 (7.76) |
| Education, y, mean (SD) | 14.67 (1.97) | 13.19 (1.70) | 12.44 (1.75) |
| Prior alcohol/drug use, mean (SD) | |||
| No. of days used in last 30 da | 6.03 (6.80) | 17.47 (10.4) | 16.27 (9.79) |
| No. of drinks/moa | 10.61 (8.25) | 365.29 (300.48) | 315.66 (267.84) |
| Years of alcohol usea | 9.30 (8.93) | 16.50 (8.21) | 16.71 (8.62) |
| Age at onset of alcohol use | 15.2 (4.52) | 14.5 (3.13) | 13.63 (3.39) |
| No. of days of drug use/mo | … | 5.8 (12.22) | 9.74 (13.7) |
| Regular smoker, No. (%)a | 5 (13.89) | 32 (88.89) | 83 (90.22) |
| Lifetime prevalence of psychiatric disorders, No. (%) | |||
| Major depressive disorders | 3 (8.33) | 6 (16.67) | 20 (21.51) |
| PTSD | 2 (5.56) | 6 (16.67) | 21 (22.58) |
| Anxiety disorders without PTSD | 0 | 3 (8.33) | 3 (4.17) |
Abbreviations: AD, alcohol dependent; ellipses, not applicable; HC, healthy control; PTSD, posttraumatic stress disorder.
a
Significant difference between HC and AD in study 1 (P<.05).