Final logistic regression models for death of infants born in 1998–2001
| Predictor variable | Model for death (n = 11 498) | ||
|---|---|---|---|
| Parameter estimate | Standard error | Adjusted OR (95% CI) | |
| *Reference group. | |||
| GA, Gestational age. | |||
| Intercept | −4.8802 | 0.1920 | |
| GA (weeks) | |||
| 31* | 0* | 1.00 | |
| 30 | 0.6075 | 0.2347 | 1.84 (1.16 to 2.91} |
| 29 | 1.1168 | 0.2193 | 3.06 (1.99 to 4.70) |
| 28 | 1.5269 | 0.2116 | 4.60 (3.04 to 6.97) |
| 27 | 2.2485 | 0.2016 | 9.47 (6.38 to 14.1) |
| 26 | 2.8459 | 0.1948 | 17.22 (11.8 to 25.2) |
| 25 | 3.4715 | 0.1939 | 32.19 (22.0 to 47.1) |
| Weight for GA (centile group) | |||
| 97+ | 0.3283 | 0.2922 | 1.39 (0.78 to 2.46) |
| 75–<97 | −0.1767 | 0.1187 | 0.84 (0.66 to 1.06) |
| 25–<75* | 0* | 1.00 | |
| 3–<25 | 0.7534 | 0.1009 | 2.12 (1.74 to 2.59) |
| <3 | 2.0865 | 0.1565 | 8.06 (5.93 to 10.9) |
| Male sex | 0.4359 | 0.0838 | 1.55 (1.31 to 1.82) |
| Hypertension in pregnancy | −0.7671 | 0.1239 | 0.46 (0.36 to 0.59) |