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Table 2 Prevalence ratios of obesity (Compared to Normal Weight) through the socioeconomic distributions of each country, joint Canada-United States survey of health, 2002/03

From: Cross-national comparison of socioeconomic inequalities in obesity in the United States and Canada

  All Among women only Among men only
  APRa (95 % CI) APRa (95 % CI) APRa (95 % CI)
Inequities by Income    
  United States    
 First quintile (lowest) 1.82 (1.52 - 2.19) 2.17 (1.66 - 2.84) 1.52 (1.17 - 1.98)
 2nd quintile 1.54 (1.28 - 1.85) 1.78 (1.36 - 2.33) 1.35 (1.04 - 1.77)
 3rd quintile 1.29 (1.06 - 1.58) 1.35 (1.01 - 1.81) 1.28 (0.97 - 1.67)
 4th quintile 1.22 (1.01 - 1.48) 1.29 (0.97 - 1.71) 1.16 (0.90 - 1.48)
 5th quintile (Ref) (Ref) (Ref)
  Canada    
 First quintile (lowest) 1.45 (1.10 - 1.91) 1.79 (1.13 - 2.82) 1.29 (0.91 - 1.83)
 2nd quintile 1.46 (1.12 - 1.91) 1.77 (1.12 - 2.79) 1.32 (0.95 - 1.82)
 3rd quintile 1.24 (0.94 - 1.63) 1.46 (0.91 - 2.33) 1.21 (0.87 - 1.69)
 4th quintile 1.12 (0.84 - 1.49) 1.06 (0.64 - 1.78) 1.22 (0.88 - 1.68)
 5th quintile (Ref) (Ref) (Ref)
Inequities by education    
  United States    
 < High school 2.00 (1.68 - 2.38) 2.39 (1.90 - 3.01) 1.63 (1.25 - 2.13)
 High school 1.46 (1.27 - 1.68) 1.55 (1.28 - 1.88) 1.42 (1.16 - 1.73)
 Technical/trade 1.42 (1.19 - 1.69) 1.53 (1.20 - 1.96) 1.32 (1.01 - 1.71)
 University/college (Ref) (Ref) (Ref)
  Canada    
 < High school 1.59 (1.25 - 2.02) 1.48 (1.00 - 2.18) 1.54 (1.16 - 2.06)
 High school 1.24 (0.98 - 1.55) 1.32 (0.93 - 1.87) 1.18 (0.88 - 1.57)
 Technical/trade 1.13 (0.88 - 1.46) 1.26 (0.88 - 1.82) 1.08 (0.78 - 1.50)
 University/college (Ref) (Ref) (Ref)
  1. APR Adjusted prevalence ratios, Uni. University
  2. Analyses among all: Income - 3346 Americans, 2221 Canadians; Education – 3021 Americans, 2087 Canadians
  3. Analyses among women: Income - 2068 Americans, 1309 Canadians; Education – 1818 Americans, 1205 Canadians
  4. Analyses among men: Income: 1278 Americans, 912 Canadians; Education –1203 Americans, 882 Canadians
  5. Bolded estimates are statistically significant at p ≤ 0.05
  6. aReferent outcome: normal weight. Odds ratios adjusted for age, age2, foreign-birth, race, marital status, health insurance (only in US) and interaction terms created by multiplying covariates by an indicator for country (i.e., age*United States, age squared*United States, foreign birth*United States, race*United States, marital status*United States)