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Table 3 Correlates# of obesity in randomized sample of Czech adolescents in relation to SES: HBSC survey in 2018

From: Time-trends and correlates of obesity in Czech adolescents in relation to family socioeconomic status over a 16-year study period (2002–2018)

      Obesity     
   Low SES   Medium SES   High SES
    95% CI    95% CI    95% CI
  %a OR lower-upper %a OR lower-upper %a OR lower-upper
Gender
 Girls 5.1 Ref.   3.4 Ref.   1.8 Ref.  
 Boys 12.0 2.11 1.70–2.61 8.8 2.29 1.93–2.72 6.3 2.39 1.89–3.03
Age Category
 15 years 8.7 Ref.   5.5 Ref.   3.3 Ref.  
 13 years 7.2 1.38* 1.07–1.76 6.7 1.35 1.11–1.63 3.8 1.20 0.93–1.55
 11 years 9.0 1.39* 1.06–1.81 6.2 1.17 0.95–1.46 5.4 1.18 0.88–1.58
60 min of MVPA
 0–6 days 8.8 Ref.   6.2 Ref.   4.7 Ref.  
 7 days 5.5 0.67* 0.47–0.96 5.8 0.98 0.77–1.24 2.1 0.63 0.46–0.86
Weekly vigorous PA
  < 4 times a week 9.1 Ref.   6.7 Ref.   4.6 Ref.  
  ≥ 4 times a week 6.7 0.73* 0.57–0.93 5.3 0.76 0.63–0.91 3.6 0.78* 0.62–0.99
Participation in sport
 Inactive (no participation) 9.9 Ref.   7.4 Ref.   5.6 Ref.  
 Team and/or individual 7.0 0.66 0.53–0.81 4.8 0.69 0.58–0.82 3.5 0.75* 0.58–0.96
Screen time on weekdays
  ≥ 2 h per weekday 8.6 Ref.   6.5 Ref.   4.3 Ref.  
  < 2 h per weekday 4.9 0.91 0.59–1.39 2.9 0.47 0.32–0.68 2.0 0.70 0.43–1.12
Breakfast on weekdays
 less than daily 8.8 Ref.   7.4 Ref.   4.3 Ref.  
 daily 7.6 0.84 0.68–1.05 5.1 0.81* 0.68–0.96 3.9 1.07 0.85–1.35
Consumption of sweets
 less than daily 8.9 Ref.   6.5 Ref.   4.6 Ref.  
 daily 5.4 0.58 0.44–0.78 4.1 0.53 0.42–0.67 2.0 0.58 0.42–0.79
Eating fast food
 less often 8.4 Ref.   6.3 Ref.   4.3 Ref.  
 at least twice a month 8.0 0.81 0.60–1.09 5.3 0.77* 0.61–0.97 3.3 0.57 0.43–0.77
Sleep time at weekends
 enough sleep 7.9 Ref.   5.9 Ref.   4.4 Ref.  
 not enough sleep 14.0 1.15 0.87–1.53 8.9 1.33* 1.05–1.69 5.5 1.48* 1.09–2.00
 too much sleep 6.0 0.79 0.61–1.03 4.8 0.82 0.67–1.01 3.0 0.89 0.67–1.17
  1. #significant in at least one of the adolescent SES categories, SES Socioeconomic status, CI 95% confidence interval, %a percentage of obese adolescents per independent variable stratified by SES, OR odds ratio (logistic regression) of being obese in SES separately conducted analysis, Ref. Reference group, PA physical activity, MVPA moderate-to-vigorous physical activity, *p < .05, p < .005, p < .001 Significant associations (p < .05) are in bold