Table 1.
Descriptive statistics and bivariate comparisons of participants with and without PTSD
| Overall n/mean | Sample %/sd | Trauma exposed/no PTSD (n=77) | PTSD (n=23) | Test p-value | |||
|---|---|---|---|---|---|---|---|
| n/mean | %/sd | n/mean | %/sd | ||||
| SLC6A4 methylation beta-value | 0.35 | 0.13 | 0.35 | 0.13 | 0.33 | 0.12 | 0.50 |
| Number of traumatic events | 6.04 | 3.6 | 5.58 | 3.48 | 7.57 | 3.65 | 0.02 |
| Age | 45.32 | 16.78 | 44.91 | 17.29 | 46.70 | 15.19 | 0.66 |
| Female | 60 | 60 | 45 | 58.4 | 15 | 65.2 | 0.56 |
| African American | 79 | 79 | 62 | 80.5 | 17 | 73.9 | 0.56 |
| Education equal to or greater than high school | 86 | 86 | 67 | 87.01 | 19 | 82.61 | 0.73 |
| Ever smoke | 58 | 58 | 41 | 53.3 | 17 | 73.9 | 0.08 |
| PBMC | 23.34 | 8.05 | 23.35 | 8.31 | 23.29 | 7.25 | 0.97 |
| Depression diagnosis | 33 | 33 | 21 | 27.30 | 12 | 52.20 | 0.03 |
| SLC6A4genotype (functional classification) SS, SLg, LgLg | 21 | 21 | 17 | 22.10 | 4 | 17.40 | 0.70 |
| SLa, LgLa | 46 | 46 | 33 | 42.9 | 13 | 56.5 | |
| LaLa | 29 | 29 | 24 | 31.20 | 5 | 21.70 | |
| LaXL, LgXL | 4 | 4 | 3 | 3.90 | 1 | 4.40 | |
Note: PBMC = peripheral blood mononuclear cells