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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: J Subst Abuse Treat. 2020 Jan 22;113:107976. doi: 10.1016/j.jsat.2020.01.012

Table 2.

Generalized Estimating Equations Examining if Trauma Characteristics Predict PTSD Response

Β (SE) χ2 df p-value
Intercept 57.15 (4.83) 328.27 1 <.001
Education (years) −1.16 (1.06) 1.19 1 .257
Days of employment (past 30 days) −0.66 (0.27) 5.92 1 .015
Sex −1.52 (5.05) 0.09 1 .764
Group 0.01 (6.65) 0.00 1 .999
Time −2.15 (0.37) 60.79 1 <.001
Trauma age 0.14 (0.28) 0.01 1 .912
Trauma count −1.72 (6.72) 0.00 1 .977
Time × group −0.12 (0.56) 0.05 1 .826
Time × trauma age −0.01 (0.02) 0.10 1 .758
Time × trauma count −0.35 (0.54) 0.01 1 .921
Group × trauma age −0.24 (0.39) 0.37 1 .545
Group × trauma count 3.19 (9.26) 0.12 1 .730
Group × time × trauma age 0.00 (0.04) 0.01 1 .933
Group × time × trauma count 0.77 (0.78) 0.97 1 .324

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.