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Table 4 Descriptive analyses for SUD for intent to treat sample (N = 34) (estimated values)

From: Trauma-focused treatment for posttraumatic stress disorder combined with CBT for severe substance use disorder: a randomized controlled trial

Variable (primary outcome measures) TAU + SWT (A) (N = 19) TAU (B) (N = 15) GLM Partial η 2 Contrast Partial η 2 GLM Partial η 2 GLM partial η 2
  pre post fu pre post fu Time Time 1 pre-post 1 pre-post condition condition Time * condition Time * condition
2 post-fu 2 post-fu
TLFB M (SD) Number of abstinent days 19.9 (29.3) 76.8 (15.5) 61.0 (30.8) 20.1 (25.4) 66.0 (30.3) 58.6 (38.4) A + B ** 0.570 1 A * B * A 0.784 B 0.668 ns 0.011 ns 0.15
2 A * B ns A 0.292 B 0.052
        McN χ 2 OR 5    Fisher φ   
SCID n ( %) Primary SUD diagnosis              - -
In remission 6 1 (5.3) 16.6 (87.4) - 3 (20.0) 10.2 (68.0) - A ** 15.6/0    ns −0.244 - -
B * 7
SCID n (%) 7 Total N SUD diagnoses              - -
In remission 1 (5.3) 16.4 (86.3) - 3 (20.0) 9.2 (61.3) - A ** 15.4/0    ns −0.293 - -
B t 8 4.9
(Single SUD diagnosis, not in remission) 9 (47.4) 2.6 (13.7) - 6 (40.0) 5.8 (68.7) - - -    - - - -
(2 SUD diagnoses not in remission) 6 (31.6) 0 (0) - 3 (20.0) 0 (0) - - -    - - - -
(≥ 3 SUD diagnosesnot in remission) 3 (15.8) 0 (0) - 3 (20.0) 0 (0) - - -    - - - -
  1. Note. PTSD Posttraumatic Stress Disorder, TAU Treatment as usual, SWT Structured Writing Therapy, PDS Posttraumatic Diagnostic Scale, SCID Structured Clinical Interview of DSM IV, PTSD Posttraumatic stress disorder, A = TAU + SWT. B = TAU. pre pre-treatment, mid mid-treatment, post post-treatment, Fu follow up. McN χ2 = McNemars χ2. OR odds ratio, Pl Con = planned contrasts * p <0.05 **p < 0.001. t trend. ns not significant, φ Phi (measure of effectsize).
  2. 5OR = increase of cases/ decrease of cases (Breslow & Day, 1980). OR was not calculated when the denominator equals zero.
  3. 6SUD has been diagnosed, however the diagnosis is partially or completely in remission during the last month.
  4. 7No analyses were performed for variables in parentheses taking into account small sample sizes and inflation of chance.
  5. 8p = 0.06.