Table 3 Multilevel regression analysis for body composition variables

Constant

19.1^†

18.1, 20.1

20.8^†

19.2, 22.3

62.6^†

61.5,63.7

Sex^¥

7.5^†

6.4, 8.5

5.0^†

3.3, 6.6

-1.2^†

-2.4,-0.03

Group**

1.3^†

0.1, 2.5

0.4

-1.5, 2.3

0.9

-0.5, 2.2

Age

0.8^†

0.7, 1.0

1.4^†

1.2, 1.7

2.3^†

2.1, 2.4

Age²

-0.2^†

-0.3, -0.03

-0.3^†

-0.6, -0.1

-0.2^†

-0.3, -.01

Group × Age²

0.2

-0.03, 0.4

0.3

0.0, 0.7

0.4^†

0.1, 0.6

School1

-1.8^†

-3.4, -0.1

n/a

-2.0^†

-3.8, -0.1

School4

3.5^†

0.8, 6.3

n/a

Random parts

variance

CI

variance

CI

variance

CI

Level 2 (Between individuals)

34.5^†

2.5, 29.6

89.0^†

6.4, 76.5

44.6^†

3.1, 38.5

Level 1 (Within individuals)

10.0^†

0.7, 8.6

25.5^†

1.8, 21.9

11.2^†

0.8, 9.7

BMI^±

BMI-SDS^±

β

CI

β

CI

Constant

17.8^†

17.3, 18.2

0.5^†

0.3, 0.6

Sex^¥

0.4

-0.05, 0.9

-0.1

-0.2, 0.1

Group**

0.4

-0.03, 0.9

0.1

-0.04, 0.3

Age

0.6^†

0.6, 0.7

0.02

0.0, 0.04

Age²

-0.04

-0.1, 0.01

-0.03^†

-0.05, -0.01

Group × Age²

0.1^†

.05, 0.2

0.04^†

0.02, 0.1

Random parts

variance

CI

variance

CI

Level 2 (Between individuals)

7.5^†

0.5, 6.6

1.1^†

0.1, 1.0

Level 1 (Within individuals)

1.0^†

0.1, 0.9

0.1^†

0.01, 0.1