| Treatment | RR | 95% CI lower limit | 95% CI upper limit | z | P |
| Dobutamine | 0.6768 | 0.3080 | 1.4874 | ‐0.97 | 0.3312 |
| Milrinone | 0.7332 | 0.3393 | 1.5844 | ‐0.79 | 0.4299 |
| Milrinone LD | 0.8584 | 0.3593 | 2.0507 | ‐0.34 | 0.7311 |
| Placebo | reference | reference | reference | reference | reference |
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