*p < .05. Note. Interventions can have more than one intervention deliverer type; the categories are not mutually exclusive. B = unstandardised regression coefficient; SE = standard error of the regression coefficient; n = the number of effect size estimates included in the analysis; R2 = the amount of variance explained by the model, where an R2 of .04 represents 4% of the variance in the effect size estimates explained by the model; and Model homog. = homogeneity Q-test value for the model, where a significant value indicates that the model explains significant variability in the effect size estimates.