Binary logistic regression of those military operational characteristics associated with post-traumatic stress disorder (PTSD)
| Characteristic | Characteristic total n (%) | PTSD no case n (%) | PTSD case n (%) | OR (95% CI) | AOR* (95% CI) | AOR† (95% CI) | AOR‡ (95% CI) | AOR§ (95% CI) |
|---|---|---|---|---|---|---|---|---|
| Lower morale | 702 (53.7) | 610 (86.9) | 92 (13.1) | 7.47 (4.05 to 13.77) | 6.46 (3.39 to 12.32) | 5.96 (3.18 to 11.40) | 3.80 (1.97 to 7.34) | 2.98 (1.40 to 6.35) |
| Higher morale | 606 (46.3) | 594 (98.0) | 12 (2.0) | 1 | 1 | 1 | 1 | 1 |
| Lower cohesion | 361 (26.0) | 297 (82.3) | 64 (17.7) | 4.70 (3.14 to 7.04) | 4.00 (2.60 to 6.16) | 4.08 (2.57 to 6.46) | 2.13 (1.34 to 3.39) | 1.72 (0.98 to 3.03) |
| Higher cohesion | 1027 (74.0) | 982 (95.6) | 45 (4.4) | 1 | 1 | 1 | 1 | 1 |
| Lower leadership | 251 (18.1) | 194 (77.3) | 57 (22.7) | 6.13 (4.09 to 9.20) | 5.27 (3.62 to 8.26) | 5.90 (3.72 to 9.35) | 3.51 (2.24 to 5.51) | 3.31 (1.91 to 5.72) |
| Higher leadership | 1137 (81.9) | 1085 (95.4) | 52 (4.6) | 1 | 1 | 1 | 1 | 1 |
| Greater problems on the home front | 429 (33.1) | 362 (84.4) | 67 (13.6) | 4.04 (2.66 to 6.13) | 4.63 (2.94 to 7.31) | 3.89 (2.47 to 6.11) | 3.58 (2.27 to 5.64) | 4.36 (2.58 to 7.39) |
| Fewer problems on the home front | 867 (66.9) | 829 (95.6) | 38 (4.4) | 1 | 1 | 1 | 1 | 1 |
| Greater exposure to potentially traumatic events | 468 (33.8) | 404 (86.3) | 64 (13.7) | 3.07 (2.06 to 4.57) | 2.72 (1.75 to 4.22) | 2.52 (1.62 to 3.93) | 2.41 (1.56 to 3.71) | 2.08 (1.23 to 3.51) |
| Lower exposure to potentially traumatic events | 916 (66.2) | 871 (95.1) | 45 (4.9) | 1 | 1 | 1 | 1 | 1 |
| Maritime deployments >5 months | 951 (68.8) | 867 (91.2) | 84 (8.8) | 1.64 (1.03 to 2.63) | 1.76 (1.06 to 2.96) | 1.44 (0.85 to 2.45) | 1.45 (0.89 to 2.37) | 1.55 (0.83 to 2.91) |
| Maritime deployments <5 months | 431 (31.2) | 407 (94.4) | 24 (5.6) | 1 | 1 | 1 | 1 | 1 |
*Adjusted for sociodemographic factors (rank, service, service length and age).
†Adjusted for Operational Factors (home front problems, exposure to potentially traumatic events, type of deployment, place of work, pre operational stress brief, land deployment).
‡Adjusted for leadership, morale and cohesion.
§Adjusted for all. AOR, adjusted odds ratio.