Table 3.
Generalized Estimating Equations Examining if Trauma Characteristics Predict SUD Response
| Β (SE) | χ2 | df | p-value | |
|---|---|---|---|---|
| Intercept | 1.36 (0.14) | 176.25 | 1 | <.001 |
| Sex | 0.15 (0.22) | 0.45 | 1 | .502 |
| Education (years) | −0.01 (0.04) | 0.03 | 1 | .863 |
| Days of employment (past 30 days) | 0.01 (0.01) | 0.16 | 1 | .689 |
| PTSD severity | 0.00 (0.00) | 4.13 | 1 | .042 |
| Group | −0.08 (0.18) | 0.20 | 1 | .657 |
| Time | −0.17 (0.03) | 42.31 | 1 | <.001 |
| Trauma age | 0.02 (0.01) | 5.93 | 1 | .015 |
| Trauma count | 0.14 (0.18) | 0.03 | 1 | .875 |
| Time × group | 0.09 (0.04) | 5.65 | 1 | .017 |
| Time × trauma age | −0.01 (0.00) | 10.92 | 1 | .001 |
| Time × trauma count | −0.02 (0.04) | 0.20 | 1 | .654 |
| Group × trauma age | −0.01 (0.01) | 1.12 | 1 | .290 |
| Group × trauma count | −0.23 (0.26) | 0.79 | 1 | .375 |
| Group × time × trauma age | 0.00 (0.00) | 2.06 | 1 | .152 |
| Group × time × trauma count | 0.02 (0.05) | 0.22 | 1 | .639 |
Note. Statistically significant effects are bolded. Group = Co-Occurring Prolonged Exposure and Relapse Prevention (COPE; Back et al., 2014) versus Relapse Prevention Therapy (RPT; Carroll, 1998; Marlatt & Donovan, 2007); trauma age and count were grand mean centered. RPT = reference category.