Meta-regression of baseline characteristics of studies
| Baseline characteristics | N | Estimate coefficient | 95% CI | p Value |
|---|---|---|---|---|
| Serum creatinine | 5 | 4.49 | −8.33 to 17.3 | 0.347 |
| Age | 5 | −0.21 | −1.08 to 0.66 | 0.497 |
| Male gender | 4 | 0.015 | −0.33 to 0.36 | 0.874 |
| DM | 5 | −0.004 | −0.39 to 0.38 | 0.977 |
| ACEi use | 4 | 0.05 | −0.29 to 0.39 | 0.574 |
| Diuretic use | 4 | 0.26 | −1.1 to 1.63 | 0.492 |
| Contrast volume | 5 | −0.09 | −0.29 to 0.12 | 0.284 |
95% CI, 95% CI of the estimate coefficient; ACEi, ACE inhibitors; DM, diabetes mellitus; N, number of studies reporting detailed baseline characteristics.