Table 1 Baseline characteristics of the Gipuzkoa and Sabadell subcohorts. Count and mean values are presented (percentage and standard deviation in parenthesis)
Gipuzkoa (n = 419)a | Sabadell first trimester (n = 394) | Sabadell third trimester (n = 469) | P b | |
|---|---|---|---|---|
Maternal education: Primary or without education | 56 (13.4%) | 108 (27.5%) | 108 (27.5%) | |
Secondary | 147 (35.1%) | 160 (40.6%) | 160 (40.6%) | *** |
University | 216 (51.6%) | 123 (31.2%) | 123 (31.2%) | *** |
Small for gestational age | 34 (8.1%) | 45 (11.4%) | 45 (11.4%) | *** |
Preterm birth (<37 weeks) | 8 (1.9%) | 11 (2.8%) | 11 (2.8%) | |
Parity:nulliparous | 231 (55.1) | 219 (55.5) | 261 (55.6) | |
Child sex: Males | 218 (52.0%) | 197 (50.0%) | 241 (51.4%) | * |
Body mass index before pregnancy: < 18.5 (Underweight) | 12 (2.9%) | 24 (6.1%) | 27 (5.8%) | ** |
18.5–25 (Healthy) | 320 (76.4%) | 268 (68%) | 310 (66.1%) | |
25.1–30 (Overweight) | 57 (13.6%) | 72 (18.3%) | 93 (19.8%) | |
>30 (Obese) | 30 (7.2%) | 30 (7.6%) | 39 (8.3%) | |
Birth weight (g) | 3310 (440) | 3240 (410) | 3260 (420) | |
Gestational week at birth | 39.7 (1.3) | 39.7 (1.4) | 39.7 (1.4) |