58 Chapter 2 Table 4. Results of multiple moderator analyses for significant categorical and continuous predictor characteristics. Outcome categories Moderator variables β (SE) 95% CI t statistic p value General functioning Intercept -0.043 (0.080) -0.207–0.122 -0.533 0.598 Outcome characteristics Assessment time Follow-up (vs post) 0.299 (0.122) 0.049–0.550 2.455 0.021* Sample characteristics Age -0.012 -0.024–0.000 -1.992 0.057 Omnibus test F(2,26) = 5.425* Variance level 2 0.061*** Variance level 3 0.000 Effect sizes (k) 29 Mental health treatment adherence Intercept 0.017 (0.258) -0.498–0.532 0.065 0.948 Outcome characteristics Assessment time Intermediate (vs post) 0.034 (0.092) -0.151–0.218 0.366 0.715 Follow-up (vs post) -0.251 (0.099) -0.448–-0.053 -2.533 0.014* Intervention characteristics Personal network involvement No involvement (vs involvement) 0.475 (0.282) -0.088–1.037 1.685 0.097 Omnibus test F(3,66) = 3.464* Variance level 2 0.000 Variance level 3 0.182*** Effect sizes (k) 70 Substance use Intercept 0.324 (0.150) 0.027–0.621 2.162 0.033* Outcome characteristics Outcome subcategories Days substance use (vs substance use) -0.054 (0.044) -0.142–0.034 -1.213 0.228 Abstinence (vs substance use) 0.131 (0.045) 0.042–0.221 2.907 0.005** Sample characteristics Sex (% males) -0.005 (0.005) -0.015–-0.005 -1.001 0.319 Intervention characteristics Duration 0.098 (0.078) -0.058–0.254 1.250 0.214 Omnibus test F(4,98) = 5.530*** Variance level 2 0.000 Variance level 3 0.019 Effect sizes (k) 103 Note: β = Cohen’s d mean effect size of the intercept, and mean effect size difference between intercept and corresponding predictors. SE = standard error. CI = confidence interval. Variance level 2 = variance between effect sizes within studies. Variance level 3 = variance between studies. k = number of effect sizes. *p < 0.05. **p < 0.01. ***p < 0.001.
RkJQdWJsaXNoZXIy MjY0ODMw