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Table 2 The predicted prevalence of obesity (%) for every category of a characteristic by education level among women: Korea National Health and Nutrition Examination Survey, 2010–2014 (N = 14,577)

From: Factors contributing to educational differences in obesity among women: evidence from South Korea

Characteristics Less-educated Highly-educated
Rate (95% CI) p Rate (95% CI) p
Demographic
 Age, years
  25–34 24.7 (20.7-28.7) <.001 14.1 (11.5-16.6) <.001
  35–44 27.6 (24.9-30.2) <.001 17.5 (14.8-20.2) <.001
  45–54 32.7 (30.5-34.9) <.001 22.4 (18.2-26.7) <.001
  55–64 39.0 (36.7-41.3) <.001 25.7 (18.8-32.6) <.001
   ≥ 65 38.4 (36.0-40.8) <.001 40.3 (27.9-52.7) <.001
 Marital status
  Married 33.1 (31.7-34.4) <.001 24.7 (21.2-28.2) <.001
  Non-married 29.8 (27.6-32.1) <.001 21.6 (16.9-26.3) <.001
 Residential area
  Urban 31.4 (30.0-32.7) <.001 23.1 (19.9-26.2) <.001
  Rural 35.6 (33.3-37.8) <.001 26.2 (20.0-32.4) <.001
Socioeconomic
 Occupational status
  Not employed 32.9 (31.3-34.6) <.001 23.4 (20.0-26.9) <.001
  Employed 31.5 (29.9-33.1) <.001 24.1 (20.2-28.0) <.001
 Household income
  Median or higher 30.2 (28.5-31.9) <.001 20.0 (16.9-23.1) <.001
  Below median 34.3 (32.6-36.0) <.001 27.3 (22.9-31.7) <.001
Lifestyle
 Current smoking    <.001    <.001
 Non-smoking 32.4 (31.1-33.6) <.001 23.3 (20.2-26.4) <.001
 Smoking 29.3 (24.8-33.8) <.001 30.3 (20.1-40.5) <.001
 Risk from alcohol intake
  No or low 30.7 (29.4-32.1) <.001 23.1 (19.9-26.3) <.001
  Medium or higher 36.0 (33.6-38.4) <.001 25.7 (21.0-30.4) <.001
 Walking exercise
  Inactive 32.6 (31.2-34.0) <.001 22.7 (19.4-26.0) <.001
  Active 31.5 (29.6-33.4) <.001 25.7 (21.4-30.0) <.001
 Self-perceived stress
  Not stressed 32.0 (30.8-33.2) <.001 23.0 (19.8-26.2) <.001
  Stressed 35.4 (30.6-40.3) <.001 37.1 (27.5-46.7) <.001
N 10,806     3771  
  1. Note: N number, Obesity body mass index ≥25, CI confidence interval
  2. Less-educated denoted high school education or less. Highly-educated denoted college degree or higher
  3. All analyses were conducted considering the complex survey design
  4. Non-married includes never-married, separated, widowed and divorced
  5. Not employed included participants who had no paid work
  6. Income was based on equivalized household income at each survey year