Table 1.
Fit statistics of confirmatory factor analytic models of PTSD symptom structure and factor loadings of the 5-factor model.
| Fit statistics
| ||||||
|---|---|---|---|---|---|---|
| Model | S-B χ2 | df | p | CFI | TLI | RMSEA (90%CI) |
| DSM-IV | 154.32 | 116 | .010 | .923 | .910 | .046 (.024-.065) |
| 4-factor dysphoria | 138.64 | 113 | .051 | .949 | .938 | .039 (.000-.058) |
| 4-factor numbing | 131.66 | 113 | .111 | .963 | .955 | .033 (.000-.054) |
| 5-factor | 119.05 | 109 | .240 | .980 | .975 | .025 (.000-.049) |
| Factor loadings | |||||
| DSM-IV PTSD symptom | Re-experiencing | Avoidance | Numbing | Dysphoric Arousal | Anxious Arousal |
| B1. Intrusive thoughts of trauma | .849 | ||||
| B2. Recurrent dreams of trauma | .718 | ||||
| B3. Flashbacks | .693 | ||||
| B4. Emotional reactivity to trauma cues | .803 | ||||
| B5. Physiological reactivity to trauma cues | .844 | ||||
| C1. Avoiding thoughts of trauma | .897 | ||||
| C2. Avoiding reminders of trauma | .917 | ||||
| C3. Inability to recall aspects of trauma | .674 | ||||
| C4. Loss of interest | .782 | ||||
| C5. Detachment | .824 | ||||
| C6. Restricted affect | .810 | ||||
| C7. Sense of foreshortened future | .719 | ||||
| D1. Sleep disturbance | .853 | ||||
| D2. Irritability/anger | .745 | ||||
| D3. Difficulty concentrating | .854 | ||||
| D4. Hypervigilance | .825 | ||||
| D5. Exaggerated startle response | .833 | ||||
Note: DSM-IV=Diagnostic and Statistical Manual of Mental Disorders, 4th edition; S-B χ2 =Satorra-Bentler chi-square.
statistic; df=degrees of freedom; CFI=comparative fit index; TLI=Tucker-Lewis Index; BIC=Bayesian Information Criterion.
RMSEA=root mean square error of approximation; 90%CI=90% confidence interval.