Multivariate analysis showing risk factors of having SGA newborns
| AGA (between 10th and 90th centile) (n=822) | SGA (<10th centile) (n=30) | P values | Crude OR (95% CI) | |
| Non-Caucasian race | 269 (32.7) | 9 (30.0) | 0.463 | 1.13 (0.52 to 2.44) |
| Smoked during gestation | 66 (8.1) | 4 (13.3) | 0.231 | 1.03 (0.97 to 1.09) |
| Smoked until gestation | 173 (21.2) | 7 (23.3) | 0.465 | 1.01 (0.97 to 1.04) |
| GDM | 157 (19.1) | 12 (40.0) | 0.008 | 2.82 (1.33 to 5.98) |
| Insulin-treated GDM | 40 (4.9) | 4 (13.3) | 0.040 | 2.82 (1.03 to 7.74) |
| Pregnancy-induced hypertension | 27 (3.3) | 3 (10.0) | 0.050 | 3.27 (0.94 to 11.45) |
| Urinary tract infection | 72 (8.8) | 8 (26.7) | 0.005 | 3.79 (1.63 to 8.81) |
| Gestational age at birth (weeks) | 39.7±1.2 | 37.6±1.8 | 0.001 | |
| <37 GW | 10 (1.2) | 13 (43.3) | 0.001 | 27.5 (15.2 to 49.8) |
| IWG | 206 (25.1) | 14 (46.6) | 0.016 | 3.20 (1.40 to 7.33) |
| Control group versus intervention group | 415 (49.2)/429 (50.8) | 25 (83.3)/5 (16.7) | 0.001 | 4.93 (1.91 to 12.77) |
Data are mean±SD or number (%).
AGA, adequate for gestational age;GDM, gestational diabetes mellitus;GW, gestational week;IWG, insufficient weight gain;SGA, small for gestational age.