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Table 2 Pooled effect size estimates and heterogeneity for four types of outcomes – random effects model

From: The effectiveness of community engagement in public health interventions for disadvantaged groups: a meta-analysis

     Heterogeneity
Outcome Pooled effect size estimate 95% C.I. n τ 2 Qstatistic I 2
Health behaviours .33*** .26, .40 105 .093 604.62*** 82.80
Health consequences .16** .06, .27 38 .076 196.36*** 81.16
Participant self-efficacy .41** .16, .65 20 .278 480.44*** 96.05
Participant social support .44*** .23, .65 7 .067 42.67*** 85.94
  1. **p < .01, ***p < .001. Statistical significance indicates the effect size estimate is significantly different from zero. Note. 95% CI = 95% confidence interval; n = number of effect sizes, τ2 = between studies variance.