Table 1

Characteristics of children

School A

School B

Both

N = 48

N = 112

N = 160

Child

Age y (mean, SD)

11.2, 2.0

8.2, 1.5

9.0, 2.1

Male (%, n)

47.9%, 23

48.2%, 54

48.1%, 77

Ethnicity

White (%, n)

73.0%, 33

77.5%, 79

76.2%, 112

Black (%, n)

8.9%, 4

1.0%, 1

3.4%, 5

Chinese (%, n)

0.0, 0

13.7%, 14

9.5%, 14

South Asian (%, n)

2.2%, 1

3.9%, 4

3.4%, 5

Other Asian (%, n)

6.7%, 3

2.0%, 2

3.4%, 5

Other (%, n)

8.9%, 4

2%, 2

4%, 6

Grade

Grade 1 (%, n)

2.1%, 1

24.7%, 22

16.8%, 23

Grade 2 (%, n)

6.3%, 3

21.4%, 19

16.1%, 22

Grade 3 (%, n)

8.3%, 4

21.4%, 19

16.8%, 23

Grade 4 (%, n)

2.1%, 1

22.5%, 20

15.3%, 21

Grade 5 (%, n)

14.6%, 7

10.1%, 9

11.7%, 16

Grade 6 (%, n)

12.5%, 6

0.0, 0.0

4.4%, 6

Grade 7 (%, n)

29.2%, 14

0.0, 0.0

10.2%, 14

Grade 8 (%, n)

25%, 12

0.0, 0.0

8.8%, 12

BMI z-scores (mean, SD)

0.65, 1.14

0.81, 0.71

0.75, 0.88

Merchant et al. Nutrition Journal 2007 6:1   doi:10.1186/1475-2891-6-1