Table 2.
Meta-regression results for enrolment.
| Subgroup | n | Odds Ratio (95% CI) | p | Residual I2 * |
|---|---|---|---|---|
| Delivery format (any face-to-face or no face-to-face) |
3096 | 0.73 (0.57 to 0.93) | 0.01 | 37% |
| Theory-based (yes or no) |
3096 | 0.98 (0.75 to 1.27) | 0.86 | 60% |
| Outcome ascertainment (self-report or chart-report) |
1835 | 0.99 (0.99 to 1.00) | 0.74 | 53% |
| Number of sites (multi-site or single-centre) |
943 | 0.90 (0.69 to 1.17) | 0.40 | 60% |
| Region (North America or other) |
3096 | 0.91 (0.70 to 1.17) | 0.44 | 60% |
| Intervention Intensity (<5 contacts or ≥5 contacts) |
2659 | 0.99 (0.99 to 1.00) | 0.23 | 66% |
| Peer navigation (yes or no) |
3096 | 0.74 (0.50 to 1.10) | 0.13 | 55% |
| Intervention deliverer (nurse or allied health care professional or no one) |
3096 | 0.73 (0.56 to 0.94) | 0.02 | 37% |
| Intervention target (patient or other) |
3096 | 1.49 (0.98 to 2.28) | 0.06 | 46% |
| Cardiac indication (heart failure included or not) |
2196 | 0.83 (0.63 to 1.10) | 0.19 | 55% |
| CR setting (supervised or unsupervised) |
1650 | 1.03 (0.84 to 1.25) | 0.76 | 15% |
* I2 statistic represents the percentage of variation across studies that is due to heterogeneity. CI—confidence interval; CR—cardiac rehabilitation.