Table 2.
Descriptive Statistics
| Mean | SD | αa | |||
|---|---|---|---|---|---|
| Scale | Raw | POMP | Raw | POMP | Btw-person (W/in-person) |
| Retrospective PCL scores | |||||
| Total | 2.65 | 41.14 | .83 | 20.79 | .88 |
| Re-experiencing | 2.76 | 43.88 | 1.01 | 25.23 | .86 |
| Avoidance | 2.56 | 39.04 | 1.05 | 26.36 | .92 |
| Numbing | 2.70 | 42.50 | 1.22 | 30.47 | .90 |
| Arousal | 2.61 | 40.18 | .81 | 20.27 | .56b |
| Mean Daily PCL Scores | |||||
| Total | 3.00 | 37.52 | 1.78 | 22.24 | .92 (.83) |
| Re-experiencing | 3.04 | 37.99 | 2.32 | 29.10 | .85 (.73) |
| Avoidance | 3.05 | 38.14 | 2.45 | 30.61 | .83 (.76) |
| Numbing | 3.11 | 38.87 | 2.37 | 29.57 | .89 (.80) |
| Arousal | 2.87 | 35.83 | 1.63 | 20.40 | .76 (.51) |
| Mean Instability in Daily Scores (RMSSD) | |||||
| Total | 1.05 | 13.18 | .54 | 6.75 | |
| Re-experiencing | 1.58 | 18.25 | .85 | 10.99 | |
| Avoidance | 1.86 | 23.87 | .98 | 14.04 | |
| Numbing | 1.57 | 19.87 | .78 | 9.81 | |
| Arousal | 1.15 | 14.99c | .51 | 6.49 | |
Note. POMP: percent of maximum possible. PCL: PTSD Checklist. RMSSD: root mean square successive difference score.
a
Daily reliability calculated using variance composition method (Cranford et al., 2006).
b
Cronbach’s alpha for the arousal subscale of the retrospective PCL was .75 at baseline and .71 at mid-point. Daily PCL was scored on 0–8 Likert scale while retrospective PCL was scored on 1–5 scale.