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Relationship between intervention effect size and number of different domains identified from the Theoretical Domains Framework.
| Outcome | Number of studies included in meta‐analysis | Pearson correlation value | P‐value |
|---|---|---|---|
| Discontinuation at 6 months follow‐up | 8 | −0.219 | 0.603 |
| Reduction at 6 months follow‐up | 5 | 0.102 | 0.870 |
