| Treatment | IRR | 95% CI lower limit | 95% CI upper limit | z | P |
| Dobutamine | 1.2711 | 0.7425 | 2.1760 | 0.87 | 0.3818 |
| Levosimendan | 1.2386 | 0.7464 | 2.0554 | 0.83 | 0.4076 |
| Milrinone | 1.3241 | 0.9129 | 1.9205 | 1.48 | 0.1390 |
| Placebo | reference | reference | reference | reference | reference |
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