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Table 2 Prevalence (percent) of obesity defined as body mass index >= 30 kg/m2) calculated from self-reported versus measured height and weight by gender, age, and ethnicity: NHANES III.(weighted)

From: Ethnic variation in validity of classification of overweight and obesity using self-reported weight and height in American women and men: the Third National Health and Nutrition Examination Survey

   Ethnicity
   EA AA MA
Men     
20–59y Self-report 16.2 18.2 18.5
  Measured 19.4 20.5 20.4
  Difference -3.2 -2.3 -1.9
60+y Self-report 15.0 17.1 18.7
  Measured 21.5 22.4 22.2
  Difference -6.5 -5.3 -3.5
Women     
20–59y Self-report 17.6 30.0 21.6
  Measured 22.1 36.1 33.3
  Difference -4.5 -6.1 -11.7
60+y Self-report 16.4 31.2 20.8
  Measured 24.1 40.0 34.4
  Difference -7.7 -8.8 -13.6
N   6846 4431 3748
  1. EA, Non-Hispanic European American, AA, Non-Hispanic African American, MA, Mexican American WT VOB123003