Table 3

Cluster centers in z-scores for the four behaviors included in the cluster analyses, prevalence of overweight and adjusted risk for overweight, separately for boys and girls participating in the Pro Children study.

Cluster

Number (%)

TV during dinner

TV viewing

PC use

Physical exercise

Overweight (%) (95% CI)

Adjusted risk for overweight (Boys, n = 3809; girls, n = 4100)


Boys

OR

95% CI


1

2624 (42.0%)

-0.92a

-0.43a

-0.44a

0.10a

12.7 (11.1–14.3)

1

2

1100 (17.6%)

0.79b

0.76b

-0.25b

0.78b

17.1 (14.2–19.9)

1.25

0.97–1.62

3

1494 (23.9%)

0.99c

-0.28c

-0.30b

-0.73c

21.7 (19.0–24.5)

1.50

1.18–1.90

4

601 (9.6)

-0.48d

-0.03d

1.47c

0.01a,d

17.9 (13.9–21.9)

1.43

1.05 – 1.96

5

436 (7.0%)

0.83e

1.68e

2.26d

-0.10d

22.2 (17.0–27.4)

1.67

1.18 – 2.37


Girls


1

1337 (21.3%)

-0.34a

-0.30a

-0.26a

1.55a

11.4 (9.3–13.5)

1

2

1339 (21.3%)

0.95b

0.95b

-0.24a

-0.41b

20.0 (17.3–22.7)

1.64

1.23 – 2.18

3

2794 (44.5%)

-0.38a

-0.49c

-0.36b

-0.47b

12.6 (11.1–14.2)

1.03

0.80 – 1.33

4

584 (9.3%)

0.15c

0.17d

1.57c

-0.18c

16.0 (12.4–19.7)

1.42

1.00 – 2.01

5

229 (3.6%)

0.58d

2.01e

3.23d

0.28d

15.4 (9.6–21.3)

1.33

0.80 – 2.21


a,b,c,d,e for significant difference (p < 0.05) between clusters with post-hoc Bonferoni testing

* ORs are adjusted for age; random intercept was allowed on country and school level

te Velde et al. BMC Public Health 2007 7:16   doi:10.1186/1471-2458-7-16

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