Trends and correlates of overweight/obesity in Czech adolescents in relation to family socioeconomic status over a 12-year study period (2002–2014)

Table 2 Trends in prevalence of overweight/obesity, PA and ST recommendations in relation to gender and FA in Czech adolescents: HBSC survey 2002–2014

Odds ratio to reach the variables^1–5		2002	2006	2010	2014		2014	vs	2002^§
								95%	CI
		%^a	%^a	%^a	%^a	p.p.	OR	Lower	Upper
Overweight/obese¹
Boys	Low FA	19.7	22.2	23.9	°29.0^###	+9.3%	1.67***	1.32	2.12
	Medium FA	18.0	22.5	27.6	24.9	+6.9%	1.51***	1.23	1.85
	High FA	16.1	20.6	24.8	°20.1	+4.0%	1.31	0.86	1.99
Girls	Low FA	11.5	15.1	14.2	°14.4^##	+2.9%	1.30	0.99	1.70
	Medium FA	6.5	17.5	11.0	11.6	+5.1%	1.90***	1.43	2.53
	High FA	4.2	13.2	12.1	°9.1	+4.9%	2.30*	1.02	5.21
MVPA recommendation²
Boys	Low FA	28.9	23.5	27.8	°23.3	−5.6%	0.75*	0.59	0.95
	Medium FA	34.2	26.3	25.0	24.5	−9.7%	0.63***	0.52	0.76
	High FA	32.2	36.6	33.2	°30.9^##	−1.3%	0.94	0.67	1.32
Girls	Low FA	22.3	14.8	17.9	°17.3	−5.0%	0.73**	0.57	0.92
	Medium FA	23.7	18.5	18.2	17.9	−5.8%	0.70**	0.58	0.86
	High FA	23.2	22.8	20.7	°23.7^##	+0.5%	1.03	0.68	1.57
Non-excessive ST weekday³
Boys	Low FA	28.2	17.3	16.7	°12.1^#	−16.1%	0.35***	0.27	0.46
	Medium FA	23.5	13.7	10.5	11.6	−11.9%	0.43***	0.34	0.54
	High FA	19.4	10.8	13.0	°9.1	−10.3%	0.42***	0.26	0.65
Girls	Low FA	39.5	27.9	19.2	°23.6	−15.9%	0.47***	0.39	0.58
	Medium FA	37.6	25.8	18.9	21.6	−16.0%	0.46***	0.38	0.55
	High FA	42.9	27.1	16.7	°25.2	−17.7%	0.45***	0.31	0.65
Non-excessive ST weekend⁴
Boys	Low FA	23.7	13.0	11.8	°9.0	−14.7%	0.32***	0.24	0.43
	Medium FA	20.7	10.8	10.0	8.4	−12.3%	0.35***	0.27	0.46
	High FA	20.9	11.1	9.9	°7.1	−13.8%	0.29***	0.18	0.46
Girls	Low FA	38.0	23.0	16.7	°18.3^#	−19.7%	0.37***	0.29	0.45
	Medium FA	32.6	18.5	15.9	15.3	−17.3%	0.37***	0.31	0.46
	High FA	35.7	20.6	13.5	°13.8	−21.9%	0.29***	0.19	0.43

FA family affluence, MVPA moderate-to-vigorous physical activity, ST screen time; p.p. – percentage points between 2002 and 2014 (2006 and 2014 for VPA recommendation); OR – odds ratio; CI – 95% confidence interval; logistic regression Enter method (LR): ¹OR of being overweight/obese, ²OR of achieving MVPA recommendations (≥60 min of MVPA per day), ^3,4OR of meeting ST recommendations (≤2 h per weekday or ≤2 h per weekend day); %^a – percentage of adolescents: who are overweight/obese (LR¹), who reach the MVPA (LR²) recommendations, who meet the ST recommendations (LR³ or LR⁴); LR^1–4 – the reference group is the cohort from 2002; °gender comparison of prevalence of overweight/obesity, MVPA, and ST recommendations between groups of children with low and high FA (chi-square); ^#/*p < 0.05, ^##/**p < 0.01, ^###/***p < 0.001

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