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Table 1 Characteristics of the study population (N = 35,434)

From: Predictors of overweight and obesity in five to seven-year-old children in Germany: Results from cross-sectional studies

Characteristic Mean SD
Age [years] 6.28 0.34
Weight [kg] 22.85 4.11
Height [cm] 120.05 5.53
BMI [kg/m2] 15.77 2.03
No of persons in the child's living place (N = 34,997) 3.91 1.06
  N %
Overweight 35,434 15.48
Obese 35,434 4.33
Male sex 35,434 50.89
Age group 35,434  
   5.0 – < 5.5 years   0.23
   5.5 – < 6.0 years   23.98
   6.0 – < 6.5 years   47.91
   6.5 – < 7.0 years   26.15
   7.0 – < 7.5 years   1.42
   7.5 – < 8.0 years   0.32
German nationality 35,146 92.22
Study region: East 35,434 67.73
Study location: Urban 35,434 76.14
Parental educational level: 33,984  
   < 10 years of schooling   11.48
   10 years of schooling   44.82
   > 10 years of schooling   43.69
Living space > 75 m2 34,095 49.51
Single child 34,997 33.86
Attendance of day nursery 33,826 56.49
Smoking in the living place 33,208 45.00
Passive smoking during the first 3 years of life 34,693 31.95
Smoking during pregnancy 34,578 13.72
Breastfeeding > 3 months 33,106 31.63
Preterm delivery 34,540 6.45
Birth weight 34,809  
   < 2500 g   5.76
   2500 – < 3000   17.00
   3000 – < 3500   38.32
   3500 – < 4000   29.45
   > 4000   9.47