Table 3.
Results of the sensitivity analysis for maternal age, parity and fetal malformation as potential confounders
| Univariatea | Multivariateb | ||
|---|---|---|---|
| Gestational age | Birthweight | Mean difference (95% Cl) | Mean difference (95% Cl) |
| 23 + 0–24 + 6 | LGA | 1.6 (−2.6 to 5.8) | 0.1 (−4.3 to 4.6) |
| 23 + 0–24 + 6 | AGA | 3.3 (2.3 to 4.3) | 2.9 (1.8 to 4.1) |
| 23 + 0–24 + 6 | SGA | 2.0 (−1.9 to 5.9) | 1.5 (−1.6 to 4.5) |
| 25 + 0–27 + 6 | LGA | 1.5 (−1.6 to 4.5) | 1.0 (−1.3 to 3.3) |
| 25 + 0–27 + 6 | AGA | 0.6 (−0.1 to 1.4) | 0.3 (−0.2 to 0.9) |
| 25 + 0–27 + 6 | SGA | 5.8 (−0.4 to 12.0) | 5.9 (3.2 to 8.5) |
| 28 + 0–30 + 6 | LGA | −1.3 (−3.7 to 1.1) | −0.9 (−3.2 to 1.4) |
| 28 + 0–30 + 6 | AGA | −0.2 (−0.8 to 0.3) | −0.2 (−0.7 to 0.3) |
| 28 + 0–30 + 6 | SGA | 8.0 (7.1 to 8.8) | 8.0 (4.6 to 11.5) |
| 31 + 0–33 + 6 | LGA | 0.1 (−1.4 to 1.6) | −0.3 (−1.4 to 0.8) |
| 31 + 0–33 + 6 | AGA | −0.3 (−0.5 to 0.0) | −0.3 (−0.6 to 0.0) |
| 31 + 0–33 + 6 | SGA | n/a | n/a |
LGA/AGA/SGA large/appropriate/small for gestational age, CI confidence interval, n/a not available
aUnivariate sensitivity analysis
bMultivariate regression model (p-values available on request)