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Table 5 Concordance of baseline BMI, measured vs. self-report

From: Self-reported and measured weights and heights among adults in Seattle and King County

  Self-reported BMI category
Underweight/normal weight Overweight Obese Agreement Kappa p-value
n (%) n (%) n (%)    
Measured BMI category       
Overall       
 Underweight/normal weight 158 (98.8) 2 (1.3) 0 (0)    
 Overweight 17 (14.5) 99 (84.6) 1 (0.9) 90.2 % 0.85 <0.0001
 Obese 0 (0) 21 (14.8) 121 (85.2)    
Gender       
 Male       
  Underweight/normal weight 44 (97.8) 1 (2.2) 0 (0)    
  Overweight 7 (15.6) 38 (84.4) 0 (0) 88.0 % 0.82 <0.0001
  Obese 0 (0) 8 (18.6) 32 (81.4)    
 Female       
  Underweight/normal weight 114 (99.1) 1 (0.9) 0 (0)    
  Overweight 10 (13.9) 61 (84.7) 1 (1.4) 91.3 % 0.87 <0.0001
  Obese 0 (0) 13 (13.1) 86 (86.9)    
  1. p-values <0.05 are in bold