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Table 2 Fetal and infant characteristics (n = 2,414)

From: Glucocorticoid receptor gene polymorphisms do not affect growth in fetal and early postnatal life. The Generation R Study

  Boys
(n = 1,233)
Girls
(n = 1,181)
P-value
Second trimester    
Gestational age (weeks) 20.6 (18.7 - 23.3) 20.4 (18.5 - 23.1) <0.01
Estimated fetal weight (grams) 386 (91) 374 (86) <0.01
Femur length (mm) 33.3 (3.2) 33.2 (3.3) 0.55
Head circumference (mm) 181.0 (13.1) 177.2 (13.0) <0.01
Third trimester    
Gestational age (weeks) 30.4 (28.6 - 33.0) 30.3 (28.3 - 32.8) <0.01
Estimated fetal weight (grams) 1646 (258) 1620 (268) <0.01
Femur length (mm) 57.4 (2.9) 57.4 (2.9) 0.64
Head circumference (mm) 288.8 (11.8) 283.7 (11.2) <0.01
Birth    
Gestational age 40.1 (35.0 - 42.4) 40.1 (35.2 - 42.1) 0.42
Weight (grams) 3518 (596) 3400 (574) <0.01
Length (cm)* 55.1 (2.4) 54.0 (2.1) <0.01
Head circumference)* 38.1 (1.3) 37.3 (1.2) <0.01
Weight < 2500 grams (%) 29 (2.4) 26 (2.2) 0.80
Preterm birth (<36 weeks) (%) 41 (3.3) 37 (3.1) 0.79
Age 6 months    
Age at visit (months) 6.2 (5.2 - 7.9) 6.2 (5.2 - 7.9) 0.28
Weight (grams) 8,078 (845) 7,540 (812) <0.01
Length (cm) 68.5 (2.4) 66.8 (2.3) <0.01
Head circumference (cm) 44.2 (1.3) 43.1 (1.7) <0.01
Age 14 months    
Age at visit (months) 14.3 (13.6 - 16.2) 14.3 (13.4 - 16.0) 0.05
Weight (grams) 10,824 (1,070) 10,191 (1,018) <0.01
Length (cm) 78.9 (2.6) 77.5 (2.6) <0.01
Head circumference (cm) 47.7 (1.3) 46.6 (1.1) <0.01
Age 24 months    
Age at visit (months) 24.8 (23.4 - 28.1) 24.8 (23.4 - 28.1) 0.48
Weight (grams) 13,140 (1,376) 12,651 (1,412) <0.01
Length (cm) 88.9 (3.4) 87.7 (3.4) <0.01
  1. Values are means (SDS) or medians (95% range).
  2. Differences between boys and girls were compared using independent samples t-tests.
  3. *Measured at 1 months of age