
9y (n = 517)*

12y (n = 440)**

9y (n = 369)***

12y (n = 369)***


All participants with valid data

All participants with valid data

Participants with valid data at both 9 y and 12 y

Participants with valid data at 9 y and 12 y



Mean

SD

Range

Mean

SD

Range

Mean

SD

Range

Mean

SD

Range


Age (years)

9.3

0.4

8.4 – 10.2

12.5

0.3

11.6 – 13.3

9.3

0.4

8.4 – 10.1

12.5

.3

11.6 – 13.3

Height (cm)

135.6

6.3

116.1 – 154.6

154.6

7.8

129.5 – 176.2

135.2

6.2

116.1 – 154.1

154.7

7.7

129.5 – 174.9

Weight (kg)

33.4

7.5

19.2 – 70.8

49.5

12.0

23.6 – 112

33.0

7.2

19.2 – 67.1

49.6

11.9

23.6 – 112

BMI (kg/m^{2})

18.0

2.9

12.6 – 31.4

20.5

3.8

12.7 – 36.7

17.9

2.8

12.6 – 29.4

20.6

3.8

12.7 – 36.7

BMIZ score

0.56

1.1

−3.1 – 3.4

0.68

1.2

−4.0 – 3.6

0.51

1.1

−3.1 – 3.4

0.68

1.2

−4.0 – 3.6

 *248 boys and 269 girls; **202 boys and 238 girls; ***168 boys and 201 girls