Risk | Number | Mortality | Definition |
Group 1 | 19 (63%) | 0 | BW > 1500 g, no MCM |
Group 2 | 9 (30%) | 2 (1 palliative surgery only, 1 pulmonary hypertension) | BW < 1500 g or MCM |
Group 3 | 2 (7%) | 0 | BW < 1500 g and MCM |
Total | 30 | 2 (7%) |
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