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. 2014 Nov 5;4(11):e005561. doi: 10.1136/bmjopen-2014-005561

Table 2.

Predictors of self-perceived weight (very overweight/obese) among obese British adults (multivariable analysis)

  Women
Men
%* OR (95% CI) p Value %* OR (95% CI) p Value
Age 0.99 (0.98 to 1.01) 0.28 1.00 (0.98 to 1.02) 0.81
Obesity grade
 Grade 1 (BMI 30–<35) 33.2 1 <0.001 19.6 1 <0.001
 Grades 2/3 (BMI ≥35) 58.6 3.27 (1.95 to 5.48) 42.4 3.26 (1.86 to 5.72)
Survey year
 2007 50.0 1 <0.05 27.0 1 0.14
 2012 33.6 0.53 (0.32 to 0.88) 23.3 0.68 (0.40 to 1.14)
Social grade
 Higher (ABC1) 47.3 1 0.09 24.6 1 0.49
 Lower (C2DE) 37.8 0.65 (0.39 to 1.07) 25.7 1.21 (0.71 to 2.04)
BMI knowledge†
 Incorrect/not known 40.0 1 <0.05 23.9 1 <0.05
 Correct 62.5 2.68 (1.16 to 5.19) 45.0 3.19 (1.18 to 8.61)

*Indicates percentage within each group perceiving themselves to be very overweight/obese.

†BMI knowledge: ‘Do you know what Body Mass Index is considered to be obese?’ (BMI=30 vs all other responses).

Weighted data. Base: women=307, men=350, All=657.

BMI, body mass index.