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Results of metaregression analysis.
| Parameter | Coefficient | 95% CI | P |
|---|---|---|---|
| Year of publication | 0.232 | -0.125, 0.590 | 0.182 |
| Outcome type | 0.042 | -0.216, 0.230 | 0.730 |
| Ethnicity | -0.767 | -1.325, -0.208 | 0.011 |
| Control group | 0.203 | -0.109, 0.515 | 0.182 |
| Case group | 0.226 | -0.465, 0.917 | 0.489 |
| Type of research | 0.172 | -0.126, 0.470 | 0.233 |
| Observed deaths | -0.143 | -0.591, 0.305 | 0.501 |
| Area | 0.071 | 0.352, 0.494 | 0.722 |
| Duration of follow-up | -0.310 | -1.385, 2.452 | 0.103 |
Abbreviation: 95% CI: 95% confidence interval.
