Table 1.
Fixed-Effect Estimates for the Multivariate Multilevel Lagged Analysis
| Outcome | Coefficient | b | SE | cr | p | pr |
|---|---|---|---|---|---|---|
| PTSD Symptoms | ||||||
| Intercept | 35.56 | 3.38 | 10.53 | <.001 | .62 | |
| Time (linear) | −0.10 | 0.03 | −3.31 | .001 | .24 | |
| Time (quadratic) | 0.00 | 0.00 | 0.11 | .914 | .01 | |
| Autocorrelation PTSD | 0.34 | 0.05 | 6.78 | .000 | .46 | |
| Cross-Lagged OQ-IR → PTSD | 0.22 | 0.09 | 2.53 | .011 | .19 | |
| Interpersonal Functioning Problems (OQ-IR) | ||||||
| Intercept | 15.57 | 1.81 | 8.62 | <.001 | .54 | |
| Time (linear) | −0.04 | 0.01 | −3.03 | <.001 | .22 | |
| Time (quadratic) | 0.00 | 0.00 | 0.24 | .810 | .02 | |
| Autocorrelation IFP | 0.21 | 0.06 | 3.52 | <.001 | .26 | |
| Cross-Lagged PTSD → OQ-IR | 0.05 | 0.02 | 2.11 | .04 | .16 | |
| Outcome | Coefficient | b | SE | cr | p | pr |
| PTSD Symptoms | ||||||
| Intercept | 34.19 | 3.47 | 9.86 | .000 | .60 | |
| Time (linear) | −0.10 | 0.03 | −3.17 | .002 | .23 | |
| Time (quadratic) | 0.00 | 0.00 | 0.12 | .909 | .01 | |
| Autocorrelation PTSD | 0.38 | 0.05 | 7.16 | <.001 | .48 | |
| Cross-Lagged OQ-SR → PTSD | 0.21 | 0.10 | 2.18 | .030 | .16 | |
| Social Role Functioning (OQ-SR) | ||||||
| Intercept | 10.43 | 1.45 | 7.18 | <.001 | .48 | |
| Time (linear) | −0.03 | 0.01 | −2.15 | .03 | .16 | |
| Time (quadratic) | 0.00 | 0.00 | −0.01 | .99 | .00 | |
| Autocorrelation SR | 0.12 | 0.05 | 2.44 | .02 | .18 | |
| Cross-Lagged PTSD → OQ-SR | 0.06 | 0.02 | 3.08 | <.001 | 0.23 | |
Note: b = unstandardized coefficient, SE = Standard Error, cr = critical ratio (estimate/standard error, which follows a z-distribution), p = p-value, pr = partial regression coefficient (.10, .24, and .37 for small, medium, and large effect sizes, respectively). PTSD = posttraumatic stress disorder (as assessed by the PCL), IFP = interpersonal functioning problems (as assessed by the OQ questionnaire), OQ-SR = social role functioning (as assessed by the OQ questionnaire).