Term (N = 1876) | Preterm (N = 296) | p | ||||
---|---|---|---|---|---|---|
n | % | n | % | |||
Characteristics | ||||||
Fetal | Gestational age: median(range) | 39 (37–41) | 35 (24–36) | |||
Birthweight: median(range) | 3240 (1380–5550) | 2080 (500–4770) | <0.001 | |||
IUGR (< 10th percentile) | 223 | 11.9 | 67 | 22.6 | <0.001 | |
Multiple pregnancy | 45 | 2.4 | 142 | 48.0 | 0.9 | |
Male | 894 | 47.7 | ||||
Associated anomalies | ||||||
chromosomal | 95 | 5.1 | 39 | 13.2 | <0.001 | |
other systems | 259 | 13.8 | 74 | 25 | <0.001 | |
Maternal | Age in years: mean | 31.1 | 32.3 | 0.002 | ||
< 30 | 710 | 38.1 | 89 | 30.3 | <0.001 | |
30–34 | 652 | 35.0 | 103 | 35.0 | ||
35–39 | 376 | 20.2 | 63 | 21.4 | ||
≥ 40 | 124 | 6.7 | 39 | 13.3 | ||
Nulliparous | 898 | 48.3 | 137 | 46.4 | 0.5 | |
Geographic origin | ||||||
France | 930 | 49.9 | 116 | 39.2 | <0.001 | |
North african | 362 | 19.4 | 65 | 22.0 | ||
African | 228 | 12.2 | 57 | 19.2 | ||
Other | 346 | 18.5 | 58 | 19.6 | ||
Maternal occupation | ||||||
professional | 444 | 25.2 | 49 | 17.6 | 0.01 | |
intermediate | 354 | 20 | 46 | 16.6 | ||
administrative/public service | 203 | 11.5 | 39 | 14.0 | ||
other | 285 | 16.2 | 50 | 18.0 | ||
none | 479 | 27 | 94 | 33.8 | ||
Diabete mellitus | 82 | 4.4 | 21 | 7.1 | 0.04 | |
Prenatal diagnosis of CHD | 375 | 20.0 | 73 | 24.7 | 0.06 |