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Table 3 Adjusted odds ratios (99% CIs) of self-described weight or attempted weight management and mis-estimation of BMI and discordance between self-reported and measured BMI categories

From: Challenging the role of social norms regarding body weight as an explanation for weight, height, and BMI misreporting biases: Development and application of a new approach to examining misreporting and misclassification bias in surveys

  BMISRUnder-Estimated by < -1.40 kg/m2 BMISRCategory < BMIMCategory
  Model 1^ Model 2^^ Model 1^ Model 2^^
Self-described weight §     
   About the right weight 1.00 1.00 1.00 1.00
   Too heavy 1.63 (1.24 to 2.14)*** 0.46 (0.32 to 0.67)*** 1.78 (1.33 to 2.39)*** 0.21 (0.13 to 0.33)***
   Too light 0.78 (0.38 to 1.61) 1.93 (0.87 to 4.28)T 0.91 (0.40 to 2.12) 22.3 (5.33 to 93.1)***
   Not sure 1.51 (0.70 to 3.27) 0.89 (0.34 to 1.89) 1.68 (0.75 to 3.78) 0.53 (0.20 to 1.45)
Attempting to manage weight     
   No 1.00 1.00 1.00 1.00
   Lose weight 1.45 (1.09 to 1.93)*** 0.59 (0.42 to 0.84)*** 1.33 (0.97 to 1.81)T 0.28 (0.18 to 0.42)***
   Maintain weight 0.97 (0.67 to 1.42) 0.91 (0.61 to 1.36) 0.90 (0.49 to 1.37) 0.82 (0.50 to 1.36)
   Gain weight 1.18 (0.31 to 4.51) 2.24 (0.57 to 8.86) 0.98 (0.21 to 4.63) 6.88 (0.84 to 56.5)T
  BMI SR Over-Estimated by > 1.40 kg/m 2 BMI SR Category > BMI M Category
  Model 1^ Model 2^^ Model 1^ Model 2^^
Self-described weight §     
   About the right weight 1.00 1.00 1.00 1.00
   Too heavy 1.44 (0.76 to 2.72) 2.54 (1.10 to 4.82)** 1.49 (0.74 to 3.01) 3.87 (1.45 to 10.1)***
   Too light 0.81 (0.16 to 4.13) 0.57 (0.10 to 3.39) 1.41 (0.27 to 7.27) 0.43 (0.06 to 3.33)
   Not sure 3.02 (0.86 to 10.5)T 3.88 (1.06 to 14.1)** 2.15 (0.47 to 9.72) 3.37 (0.70 to 16.3)T
Attempting to manage weight     
   No 1.00 1.00 1.00 1.00
   Lose weight 1.43 (0.74 to 2.78) 1.99 (0.92 to 4.31)T 1.98 (0.97 to 4.03)T 4.48 (1.85 to 10.8)***
   Maintain weight 0.99 (0.41 to 2.41) 1.02 (0.43 to 2.51) 0.77 (0.23 to 2.52) 1.01 (0.30 to 3.40)
   Gain weight - - 1.93 (0.12 to 32.0) 1.94 (0.11 to 32.8)
  1. All values reported above are adjusted OR (99% CI).
  2. BMISR, BMI based on self-reported weight and height; BMIM, BMI based on measured weight and height.
  3. § Self-described weight taking into account age and height.
  4. ^ Model 1: Multivariate logistic regression with adjustment for sex, age, ethnicity, current smoking status, alcohol consumption, physical acitvity level, level of education, and marital status.
  5. ^^ Model 2: Same as previous model but with BMI category as an additional covariate
  6. T P < 0.05, ** P < 0.01, *** P < 0.001.