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Multivariable Cox regression model for mortality
| Hazard Ratio | 95 % Confidence Interval | P | ||
|---|---|---|---|---|
| Era 1 | 1.00 | - | - | - |
| Era 2 | 0.98 | 0.10 | 9.81 | 0.98 |
| Era 3 | 0.21 | 0.01 | 3.9 | 0.29 |
| Era 4 | 0.29 | 0.03 | 2.80 | 0.29 |
Controlling for primary repair, additional minor anomalies, and WHSR score. Variables considered but omitted from final model included Caucasian race, gestational age, birth weight, gender, and prenatal diagnosis.
Era 1=1998–1999, Era 2=2000–2002, Era 3=2003–2004, Era 4=2005–2013
