Table 2 Maternal and neonatal characteristics by SGA group. Values are mean (SD) or n (%) as appropriate.
| Non‐SGA both N = 11 586 | SGA population only N = 204 | SGA customised only N = 565 | SGA both N = 1306 | p Value | ||
|---|---|---|---|---|---|---|
| Intermediate groups‡ | All groups | |||||
| Nulliparity | 6757 (58.3) | 166 (81.4) | 254 (45) | 849 (65) | <0.001* | <0.001* |
| Body mass index | 23.4 (4.2) | 21.1 (2.7) | 24.9 (5.2) | 23.2 (4.2) | <0.001† | <0.001† |
| Maternal age | 30.3 (5.4) | 29.6 (5.6) | 30.9 (5.2) | 30.5 (5.3) | 0.02† | 0.03† |
| Non‐smoking | 9280 (80.1) | 134 (65.7) | 402 (71.2) | 824 (63.1) | 0.14* | <0.001* |
| Low socioeconomic group | 2266 (19.6) | 39 (19.1) | 128 (22.7) | 250 (19.1) | 0.29* | 0.31* |
| White‐European | 8475 (73.1) | 178 (87.3) | 403 (71.3) | 1045 (80) | <0.001* | <0.001* |
| Preeclampsia | 195 (1.7) | 10 (4.9) | 41 (7.3) | 75 (5.7) | 0.25* | <0.001* |
| Gestational age at delivery | 39.9 (1.9) | 39.5 (1.4) | 39.3 (3.4) | 39.4 (2.5) | 0.29† | <0.001† |
| Delivery <37 weeks | 642 (5.5) | 2 (1) | 111 (19.6) | 119 (9.1) | <0.001* | <0.001* |
| Birth weight | 3343 (461) | 2700 (204) | 2662 (589) | 2441 (457) | 0.38† | <0.001† |
SGA, small for gestational age.
*Pearson‐χ2; †One‐way analysis of variance.
‡Between SGA population only and SGA customised only.