Table 1. Demographic information on healthy volunteers (HV), alcohol dependent subjects without PTSD (ALC), and alcohol dependent subjects with PTSD (ALC+PTSD).
| Demographics of study populations | HV (n=19) | ALC (n=19) | ALC+PTSD (n=17) | Statistics | Statistics between ALC and ALC+PTSD |
|---|---|---|---|---|---|
| Mean Age (SDa) | 26.22 (4.05) | 32.61 (7.30) | 37.17 (8.69) | b P < 0.0001 | b P = 0.10 |
| Number of Females | 9 | 5 | 8 | c P = 0.31 | c P = 0.19 |
| Years of Education (SD) | 16.47 (1.98) | 12.68 (2.79) | 13.71 (1.65) | b P < 0.0001 | b P = 0.20 |
| Mean of Average Drinks Past 30 Days (SD) | 17.46 (16.12) | 382.68 (281.70) | 250.58 (178.36) | b P < 0.0001 | b P = 0.11 |
| Mean No. Days Abstinent before Scan Date (SD) | -- | 15.56 (6.00) | 23.79 (13.17) | -- | b P = 0.025 |
| Mean Early Life Stress Questionnaire Score (SD) | 0.37 (0.60) | 2.89 (2.11) | 5.59 (3.50) | b P < 0.0001 | b P = 0.0077 |
| Mean CAPS Score, week prior | -- | -- | 2.77 (0.83) | -- | -- |
| Number of Smokers | 0 | 10 | 11 | c P < 0.0001 | c P = 0.46 |
| Current Cocaine Abuse and/or Dependence | -- | 1 | 2 | -- | -- |
| Current Cannabis Abuse and/or Dependence | -- | 1 | 1 | -- | -- |
| Current Major Depressive Disorder | -- | 2 | 3 |
a SD = standard deviation; b ANOVA; c Likelihood Ratio Chi2 test