Table 1.
Demographic characteristics, trauma history and psychiatric symptoms scores across COMT genotype groups before deployment
|
COMT Met/Met |
COMT Met/Val |
COMT Val/Val |
p value |
||
|---|---|---|---|---|---|
|
| |||||
| Demographics
| |||||
| n | 201 | 332 | 181 | N/A | |
|
| |||||
| Age (M, SD) a | 22.30 (2.89) | 22.11 (2.77) | 22.04 (2.61) | 0.54 | |
|
| |||||
| Marital status % b | 0.63 | ||||
| Never married | 68.66 | 71.69 | 69.61 | ||
| Married | 28.85 | 26.51 | 29.83 | ||
| Divorced | 1.00 | 1.20 | 0.56 | ||
| Separated | 1.49 | 0.60 | 0.00 | ||
|
| |||||
| Higher education % b | 0.65 | ||||
| Masters or Doctorate Degree | 0.00 | 0.30 | 0.00 | ||
| College | 24.38 | 24.40 | 28.73 | ||
| High school diploma | 74.13 | 72.29 | 66.85 | ||
| Other | 1.49 | 3.01 | 4.42 | ||
|
| |||||
| Months spent in military (M, SD) a | 31.77 (25.44) | 29.36 (24.82) | 29.06 (24.87) | 0.46 | |
|
| |||||
| Months left in enlistment (M, SD) a | 27.19 (12.96) | 27.32 (13.48) | 26.84 (13.54) | 0.95 | |
|
| |||||
| Trauma history
| |||||
| Childhood trauma (CTQ) (M, SD)a | 36.75 (12.91) | 36.68 (11.61) | 38.08 (14.81) | 0.46 | |
|
| |||||
| Lifetime trauma (LEC) (M, SD) a | 4.60 (3.17) | 4.32 (2.82) | 4.28 (2.77) | 0.44 | |
|
| |||||
| Psychiatric symptoms
| |||||
| CAPS score (M, SD) b | 14.11 (13.62)** | 11.01 (12.68) | 12.36 (12.90) | < 0.01 | |
|
| |||||
| BDI-II (M, SD) a | 5.95 (7.04) | 4.72 (5.90) | 5.14 (6.06) | 0.09 | |
|
| |||||
| PTSD diagnosis (%) c | 11.44 | 7.83 | 11.60 | 0.26 | |
BDI-II, Beck Depression Inventory II; CAPS, Clinician-Administered PTSD Scale.
a
One-way ANOVA performed followed by Tukey’s post hoc test;
b
non-parametric Kruskal-Wallis test;
c
Chi-squared test performed;
**
p < 0.05 following Dunn’s comparison test, compared to COMT Met/Val genotype