Skip to main content

Table 4 Predictors of change in alcohol use from baseline: 6- and 12-month outcomes (N = 237 and 222)

From: Associations between personality disorder characteristics and treatment outcomes in people with co-occurring alcohol misuse and depression

   Outcome: Change in Alcohol use (OTI) at 6-months Outcome: Change in Alcohol use (OTI) at 12-months
Predictor Simple correlation ∆R2 Standardized regression weight Sig. Simple correlation ∆R2 Standardized regression weight Sig.
Step 1    .655     .652   
Age -.051   .025 .552 .019   .082 .066
Gender (M = 1, F = 2) -.063   -.053 .190 -.160   -.104 .015*
Baseline alcohol use (OTI) -.783   -.790 < .001 -.781   -.789 < .001
Baseline depression (BDI-II) .072   -.043 .314 .055   -.045 .308
Baseline functioning (GAF) -.130   -.094 .027* -.096   -.084 .060
Baseline IPDEQ:         
 Cluster A -.013   -.033 .473 .003   .019 .696
 Cluster B .046   .077 .104 .035   .069 .160
 Cluster C .055   .056 .205 .041   .025 .603
 Overall scorea .045   .077 .073 .039   .086 .055
Treatment condition (TC) contrasts:         
 TC1: Brief vs. 10 sessions .091   .078 .054 .045   .012 .767
 TC2: Integrated- vs. single-focused -.041   -.027 .501 -.046   -.056 .182
 TC3: Alcohol- vs. depression-focused -.109   -.091 .023* -.094   -.064 .126
Step 2    .007     .015   
Interactions between cluster scores and TC contrasts (m = 9)         
Interactions between IPDEQ overall score and TC contrasts (m = 3)a         
   (R2 = 0.662)     (R2 = 0.667)   
  1. Note: IPDEQ, International Personality Disorder Examination Questionnaire. Change scores = follow-up phase minus baseline; *Trend (p < .05). aFrom a separate hierarchical regression including IPDEQ overall score (Step 1) and associated interactions (Step 2); only significant or trend level interactions are reported (m = number of interactions examined)