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Table 3 Stepwise adjusted odds ratios (OR) of physical work capacity and total energy expenditure according to parental education, boys and girls 11–17 years

From: Physical activity, aerobic fitness and parental socio-economic position among adolescents: the German Health Interview and Examination Survey for Children and Adolescents 2003–2006 (KiGGS)

  High aerobic fitness   High total energy expenditure  
  Basic modela Final modelb Basic modela Final modelc
  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 1.3 (1.0-1.6) 1.1 (0.8-1.4) 1.1 (0.8-1.3) 1.0 (0.8-1.2)
  Tertiary 1.6 (1.2-2.1) 1.3 (1.0-1.8) 1.2 (0.9-1.5) 1.1 (0.8-1.5)
Parental occupation     
  Low 1.0 1.0 1.0 1.0
  Middle 1.4 (1.2-1.7) 1.3 (1.0-1.5) 1.2 (1.0-1.5) 1.2 (1.0-1.5)
  High 1.3 (1.1-1.6) 1.1 (0.8-1.4) 1.1 (0.9-1.4) 1.1 (0.9-1.4)
Household income     
  Low 1.0 1.0 1.0 1.0
  Middle 1.2 (1.0-1.5) 1.0 (0.8-1.3) 1.1 (0.9-1.4) 1.0 (0.8-1.3)
  High 1.2 (1.0-1.5) 1.0 (0.8-1.3) 1.1 (0.9-1.3) 0.9 (0.7-1.2)
Girls (n = 2574)     
Parental education     
  Primary 1.0 1.0 1.0 1.0
  Secondary 1.5 (1.2-1.9) 1.4 (1.1-1.8) 1.5 (1.2-1.9) 1.3 (1.1-1.7)
  Tertiary 1.9 (1.4-2.5) 1.4 (1.0-1.9) 2.4 (1.8-3.1) 1.8 (1.4-2.4)
Parental occupation     
  Low 1.0 1.0 1.0 1.0
  Middle 1.3 (1.1-1.6) 1.1 (0.8-1.3) 1.4 (1.1-1.7) 1.2 (0.9-1.5)
  High 1.7 (1.3-2.0) 1.2 (1.0-1.6) 1.8 (1.4-2.3) 1.3 (1.0-1.7)
Household income     
  Low 1.0 1.0 1.0 1.0
  Middle 1.2 (1.0-1.5) 1.0 (0.8-1.3) 1.2 (1.0-1.5) 1.0 (0.8-1.3)
  High 1.5 (1.2-1.8) 1.1 (0.8-1.4) 1.6 (1.2-2.0) 1.0 (0.8-1.3)
  1. 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 ‘BMI-for-age’, ‘physical wellbeing’ and ‘parental support for leisure time activity’ among girls (education, occupation and income in combined model). cAdjusted as the basic model and also for ‘BMI-for-age’ among boys, ‘physical wellbeing’ and ‘parental support for leisure time activity’ (education, occupation and income in combined model).