| B | SE B | β | ∆R2 | p |
---|---|---|---|---|---|
Step 1 | Â | Â | Â | .04 | .15 |
 Years as an aid worker | 0.10 | 0.07 | 0.19 |  |  |
Step 2 | Â | Â | Â | .05 | .07 |
 Years as an aid worker | 0.08 | 0.07 | 0.15 |  |  |
 Years of education | 0.50 | 0.27 | 0.23 |  |  |
Step 3 | Â | Â | Â | .03 | .20 |
 Years as an aid worker | 0.08 | 0.07 | 0.14 |  |  |
 Years of education | 0.42 | 0.27 | 0.20 |  |  |
 Stress Vulnerability | −0.08 | 0.06 | −0.17 |  |  |
Step 4 | Â | Â | Â | .04 | .10 |
 Years as an aid worker | 0.05 | 0.07 | 0.10 |  |  |
 Years of education | 0.51 | 0.27 | 0.24 |  |  |
Stress Vulnerability | −0.02 | 0.07 | −0.05 |  |  |
 HIRI | 0.30 | 0.18 | 0.24 |  |  |