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Meta-regression analysis of the determinants of heterogeneity between study-specific effect estimates
| Determinants | Univariate analyses | ||
|---|---|---|---|
| Regression coefficient | 95% CI | P value | |
| Geographic area | -0.012 | -0.155-0.131 | 0.853 |
| Study population size | -0.00003 | -0.0005-0.0004 | 0.874 |
| Publication year | 0.01 | -0.011-0.031 | 0.330 |
| Adjusted RR | 0.035 | -0.172-0.242 | 0.714 |
| Study population age | -0.082 | -0.308-0.144 | 0.440 |
