Table 2.

Stepwise adjusted odds ratios (OR) of physical activity and media use according to parental education, boys and girls 11–17 years

	High leisure time activity		High media use
	Basic model a	Final model b	Basic model a	Final model c
	OR 95% CI	OR 95% CI	OR 95% CI	OR 95% CI
Boys (n = 2677)
Parental education
Primary	1.0	1.0	1.0	1.0
Secondary	0.9 (0.8-1.2)	0.9 (0.7-1.2)	0.8 (0.6-1.0)	0.9 (0.7-1.2)
Tertiary	0.8 (0.6-1.0)	0.8 (0.6-1.1)	0.5 (0.4-0.7)	0.7 (0.5-0.9)
Parental occupation
Low	1.0	1.0	1.0	1.0
Middle	0.8 (0.7-1.0)	0.8 (0.7-1.0)	0.5 (0.4-0.7)	0.6 (0.5-0.7)
High	0.8 (0.6-1.0)	0.9 (0.7-1.1)	0.5 (0.4-0.6)	0.6 (0.5-0.8)
Household income
Low	1.0	1.0	1.0	1.0
Middle	0.9 (0.8-1.1)	1.0 (0.8-1.2)	0.8 (0.6-1.0)	0.9 (0.7-1.2)
High	0.9 (0.7-1.1)	0.9 (0.7-1.2)	0.7 (0.5-0.8)	1.0 (0.8-1.3)
Girls (n = 2574)
Parental education
Primary	1.0	1.0	1.0	1.0
Secondary	1.3 (1.0-1.6)	1.2 (0.9-1.5)	0.7 (0.6-0.9)	0.8 (0.6-1.1)
Tertiary	1.2 (0.9-1.5)	1.0 (0.7-1.3)	0.3 (0.3-0.5)	0.5 (0.3-0.6)
Parental occupation
Low	1.0	1.0	1.0	1.0
Middle	1.1 (0.9-1.4)	1.1 (0.9-1.4)	0.5 (0.4-0.7)	0.7 (0.6-0.9)
High	1.3 (1.0-1.6)	1.2 (0.9-1.6)	0.5 (0.4-0.6)	0.7 (0.6-1.0)
Household income
Low	1.0	1.0	1.0	1.0
Middle	0.9 (0.7-1.1)	0.9 (0.7-1.1)	0.7 (0.6-0.9)	0.9 (0.7-1.2)
High	1.2 (1.0-1.5)	1.1 (0.9-1.4)	0.6 (0.5-0.7)	1.0 (0.8-1.3)

^aModel adjusted for age groups and region strata East–west Germany (separate models for education, occupation and income). ^bAdjusted as the basic model and also for ‘physical wellbeing’ , ‘parental support for leisure time activity’ among boys, and ‘BMI-for-age’ among boys (education, occupation and income in combined model). ^cAdjusted as the basic model and also for ‘BMI-for-age’ among girls, ‘physical wellbeing’ among girls and ‘parental support for leisure time activity’ (education, occupation and income in combined model).