Table 5.
Cox regressions for mortality
| Hazard ratio 95% CI | p‐value | |
|---|---|---|
| 97–06 vs < 97 | 0.26 (0.10–0.71) | 0.009 |
| 07–16 vs < 97 | 0.34 (0.14–0.80) | 0.014 |
| Gestational age | 0.84 (0.75–0.94) | 0.003 |
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