Table 3.
Sensitivity analyses to test robustness of trauma imagery task FC - six month post-trauma PTSD symptom assocations when accounting for other relevant demographic, clinical, and trauma-related predictors.
| Predictor | B | β | t | p |
|---|---|---|---|---|
| MR Scanner Type | −0.173 | −0.038 | −0.256 | 0.800 |
| Age | 0.012 | 0.059 | 0.510 | 0.614 |
| Sex (male/female) | −1.104 | −0.221 | −1.657 | 0.109 |
| Education (post-secondary/no post-secondary) | −0.280 | −0.056 | −0.387 | 0.702 |
| African American Race (versus Caucasian) | 1.087 | 0.231 | 1.592 | 0.123 |
| Other Minority Race | 0.008 | 0.001 | 0.008 | 0.994 |
| Physical Assault (versus motor vehicle crash) | 0.929 | 0.153 | 0.998 | 0.327 |
| Other non-vehicular incident (versus motor vehicle crash) | −2.031 | −0.179 | −0.995 | 0.328 |
| Trauma Load | −0.097 | −0.170 | −1.138 | 0.265 |
| Psychotropic Medication | 0.663 | 0.109 | 0.686 | 0.498 |
| Pain Medication | 0.697 | 0.136 | 1.026 | 0.314 |
| Two-Week PTSD Symptoms (IES-R) | 0.014 | 0.112 | 0.599 | 0.554 |
| Two-Week Depressive Symptoms (BDI-II) | −0.044 | −0.143 | −0.853 | 0.401 |
| Two-Week Anxiety Symptoms (BAI) | 0.070 | 0.304 | 1.615 | 0.118 |
| Two-Week Pain Rating | 0.062 | 0.062 | 0.410 | 0.685 |
| Alcohol Use (AUDIT-C) | 0.155 | 0.130 | 1.001 | 0.326 |
| Right Amygdala – Right Precentral/Postcentral Gyrus FC | −4.720 | −0.337 | −2.207 | 0.036* |
| Left Amygdala – Left Midcingulate FC | −4.487 | −0.322 | −1.909 | 0.067 |
*p < .05 More negative right amygdala – right precentral/postcentral gyrus functional connectivity (FC) survived as a significant predictor of six-month post-trauma PTSD symptom severity.