Table 1.

Trends in prevalence of overweight and obesity HBSC study, 2002–10

Variable	2002	2006	2010	2006 vs. 2002	2010 vs. 2002
	%a	%a	%a	OR (95% CI)	OR (95% CI)
Boys
11years	21.4	30.1	30.7	1.580 (1.259–1.984)***	1.625 (1.289–2.050)***
13 years	17.1	21.2	27.3	1.300 (1.009–2.343)*	1.817 (1.409–2.343)***
15 years	16.6	16.8	22.3	1.010 (0.779–1.311)	1.434 (1.112–1.851)**
Girls
11 years	10.7	23.1	15.7	2.541 (1.929–3.347)***	1.558 (1.155–2.102)**
13 years	8.7	16.4	11.0	2.061 (1.524–2.786)***	1.295 (0.934–1.795)
15 years	6.6	11.6	11.4	1.868 (1.322–2.640)***	1.830 (1.285–2.607)**

Results from logistic regression.

a: Percentage of participants who are overweight or obese.

OR = odds ratio (cohorts from year 2002 are reference groups), CI = 95% confidence interval.

*P ≤ 0.05; **P ≤ 0.01; ***P ≤ 0.001.