Birth history
Birth and gestation data were available in 108 and 112 children
respectively (Table 2). The median gestational age was 40 weeks
(interquartile range (IQR)=38-40) and the mean birthweight was 3270g
(standard deviation (SD)=570). Six children had low birthweight (less
than 2500g), four of whom were premature, and the youngest born at 30
weeks’ gestation.