Age at the point of measurement

n

All

Boys

Girls

Mean ± SD

Birth

863

BMI

12.63 ± 1.25

12.62 ± 1.22

12.66 ± 1.29

1.5 years of age

781

BMI

16.75 ± 1.21

16.96 ± 1.27

16.52 ± 1.10

BMI z-score

0.61 ± 0.84

0.64 ± 0.91

0.58 ± 0.75

2 years of age

802

BMI

16.10 ± 1.15

16.19 ± 1.22

16.01 ± 1.06

BMI z-score

0.35 ± 0.85

0.31 ± 0.92

0.41 ± 0.76

3 years of age

427

BMI

15.69 ± 1.15

15.78 ± 1.18

15.60 ± 1.11

BMI z-score

0.10 ± 0.87

0.10 ± 0.91

0.11 ± 0.82