Table 2.

Mean values for fetal parameters analysed by fetal sex.

	Male fetuses (n = 124)	Female fetuses (n = 122)	P value
At recruitment (28 weeks)
Abdominal Circumference (mm)	243.5 (14.5)	243.3 (13.8)	NS
Abdominal subcutaneous tissue (mm)	3.4 (0.7)	3.4 (0.8)	NS
Mid-thigh muscle thickness (mm)	7.7 (1.9)	7.5 (1.6)	NS
Mid-thigh subcutaneous tissue (mm)	2.9 (0.9)	2.9 (0.8)	NS
At second assessment (37 weeks)
Abdominal circumference (mm)	331.6 (19.4)	333.0 (16.6)	NS
Abdominal subcutaneous tissue (mm)	6.4 (1.5)	6.6 (1.3)	NS
Mid-thigh muscle thickness (mm)	10.4 (2.8)	10.4 (2.5)	NS
Mid-thigh subcutaneous tissue (mm)	5.2 (1.4)	5.0 (1.4)	NS
At birth
Gestation (weeks)	40.2 (1.2)	40.2 (1.0)	NS
Birth weight (kg)	3.7 (0.5)	3.6 (0.4)	NS