Ability of screening tools to predict PTSD diagnosis
| Univariable logistic regression | Multivariable logistic regression (R2=0.058) | |||
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Age (years) | 0.997 (0.967 to 1.028) | 0.852 | 0.999 (0.966 to 1.034) | 0.961 |
| Gender | 1.053 (0.251 to 4.224) | 0.942 | 0.958 (0.210 to 4.373) | 0.956 |
| ISS | 1.023 (0.931 to 1.123) | 0.639 | 1.024 (0.929 to 1.130) | 0.629 |
| Initial question | 2.316 (0.831 to 6.456) | 0.108 | 2.360 (0.814 to 6.847) | 0.114 |
| Univariable logistic regression | Multivariable logistic regression (R2=0.141) | |||
| Age (years) | 0.997 (0.967 to 1.028) | 0.852 | 1.004 (0.967 to 1.042) | 0.836 |
| Gender | 1.053 (0.251 to 4.224) | 0.942 | 0.834 (0.152 to 4.568) | 0.834 |
| ISS | 1.023 (0.931 to 1.123) | 0.639 | 1.034 (0.935 to 1.143) | 0.513 |
| NSESSS-1 (3–5 days) | 2.745 (1.312 to 5.744) | 0.007 | 2.982 (1.326 to 6.705) | 0.008 |
| Univariable logistic regression | Multivariable logistic regression (R2=0.125) | |||
| Age (years) | 0.997 (0.967 to 1.028) | 0.852 | 0.993 (0.953 to 1.036) | 0.752 |
| Gender | 1.053 (0.251 to 4.224) | 0.942 | 0.590 (0.084 to 4.159) | 0.597 |
| ISS | 1.023 (0.931 to 1.123) | 0.639 | 1.052 (0.937 to 1.182) | 0.392 |
| NSESSS-2 (2–4 weeks) | 2.988 (1.064 to 8.389) | 0.038 | 3.707 (1.137 to 12.841) | 0.039 |
ISS, Injury Severity Score; NSESSS, National Stressful Events Survey Acute Stress Disorder Scale; PTSD, post-traumatic stress disorder.