Term (n = 656) | Preterm (n = 172) | |||
---|---|---|---|---|
Mean (SD)/ | Mean (SD)/ | |||
n (%) | n (%) | p1 | p2 | |
Prenatal and maternal characteristics | ||||
Girl (n/%) | 302 (46.0) | 73 (42.4) | 0.40 | 0.38 |
Multiple birth (n/%) | 15 (2.3) | 29 (16.9) | < 0.001 | < 0.001 |
Mother's smoking during pregnancy (n/%) | ||||
> 10 | 39 (5.9) | 9 (5.2) | 0.90 | 0.52 |
1-10 | 104 (15.9) | 39 (22.7) | 0.04 | 0.07 |
none | 513 (78.2) | 124 (72.1) | - | - |
Mother's age (years) | 29.32 (5.1) | 29.65 (5.2) | 0.45 | 0.53 |
Mother's height (cm) | 164.18 (5.3) | 164.29 (5.6) | 0.80 | 0.50 |
Mother's BMI at the end of pregnancy (m2/kg) | 27.55 (4.1) | 26.26 (3.5) | < 0.001 | < 0.001 |
Mother's change in weight during pregnancy (kg) | 11.83 (4.5) | 9.98 (4.9) | < 0.001 | < 0.001 |
Birth characteristics | ||||
Birth weight (grams) | 3513 (533) | 2282 (604) | - | < 0.001 |
Gestational age (weeks) | 39.4 (1.3) | 34.0 (2.4) | - | < 0.001 |
Birth weight standard deviation score | 0.0 (1.1) | -0.66 (1.3) | - | < 0.001 |
Parental educational attainment (n/%) | ||||
High | 153 (23.3) | 38 (22.1) | - | - |
Upper middle | 187 (28.5) | 49 (28.5) | 0.83 | 0.76 |
Lower middle | 240 (36.6) | 61 (35.5) | 0.92 | 0.92 |
Low | 76 (11.6) | 24 (14.0) | 0.42 | 0.53 |
Child's General Reasoning at 56 months* | 100.0 (17.2) | 97.7 (16.6) | 0.14 | 0.14 |