Table 8.
First-Order Factor Scores and Bifactor Scores by TBI Severity and Level of Deployment Stress
| TBI severity |
Stress exposure |
||||||
|---|---|---|---|---|---|---|---|
| Factor score | Very mild (n = 610) | Mild (n = 260) | More than mild (n = 58) | p | Low (n = 410) | High (n = 519) | p |
|
| |||||||
| First-order CFA model | |||||||
| PCS | −.08 (.47) | .17 (.49) | .10 (55) | <.001 | −.10 (.48) | .08 (.50) | <.001 |
| Posttraumatic stress | −.03 (.77) | .26 (.85) | .12 (.84) | <.001 | −.18 (.71) | .26 (.82) | <.001 |
| Depression | .05 (.79) | .11 (.83) | .02 (.81) | .522 | −.05 (.79) | .16 (.80) | <.001 |
| Bifactor CFA model | |||||||
| General | .00 (.30) | .10 (.32) | .06 (.32) | <.001 | −.06 (.27) | .11 (.31) | <.001 |
| Cognitive/Somatic | −.07 (.34) | .08 (.33) | .05 (.44) | <.001 | −.03 (.34) | −.02 (.35) | .419 |
| Re-experiencing/Hyperarousal | −.02 (.28) | .04 (.33) | −.01 (.33) | .067 | −.03 (.27) | .02 (.31) | .013 |
| Depressed mood/Anhedonia | .06 (.59) | −.04 (.63) | −.07 (.70) | .043 a | .05 (.62) | .00 (.61) | .265 |
Note. PCS = postconcussive symptoms; TBI = traumatic brain injury; CFA = confirmatory factor analysis. Boldface indicates significant differences within the overall model.
a
No significant paired comparisons following multiple-comparison correction.