Table 1
Mean height, weight, body mass index (BMI) and prevalence of obesity, by collection method and sex, household population aged 18 to 79, Canada, 2008, 2007 to 2009, and 2005

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  Self-reported Measured Bias
Estimate 95% confidence interval Estimate 95% confidence interval Self- reported minus measured 95% confidence interval
from to from to from to
2008 Canadian Community Health Survey
Men
Mean height (cm) 175.8* 175.3 176.3 174.6 174.1 175.1 1.2 0.9 1.5
Mean weight (kg) 81.6* 80.7 82.5 83.8 82.8 84.7 -2.2 -2.4 -1.9
Mean BMI (kg/m2 ) 26.4* 26.1 26.6 27.5 27.2 27.9 -1.2 -1.4 -1.0
% obese (BMI 30.0 kg/m2 or more) 18.5* 16.0 21.2 26.1 23.4 28.9 -7.6 -9.5 -5.7
Women
Mean height (cm) 162.1* 161.7 162.5 161.2 160.7 161.6 0.9 0.6 1.2
Mean weight (kg) 66.8* 66.0 67.7 69.5 68.6 70.4 -2.7 -2.9 -2.4
Mean BMI (kg/m2 ) 25.4* 25.1 25.7 26.9 26.5 27.3 -1.5 -1.7 -1.2
% obese (BMI 30.0 kg/m2 or more) 16.1* 14.2 18.2 23.3 20.8 25.9 -7.2 -9.2 -5.2
2007 to 2009 Canadian Health Measures Survey
Men
Mean height (cm) 176.4* 175.5 177.2 175.1 174.4 175.9 1.2 1.0 1.4
Mean weight (kg) 83.9* 82.2 85.7 84.6 82.8 86.4 -0.6 -0.9 -0.3
Mean BMI (kg/m2 ) 26.9* 26.6 27.3 27.5 27.1 27.9 -0.6 -0.7 -0.5
% obese (BMI 30.0 kg/m2 or more) 21.2* 17.5 25.4 24.2 20.6 28.2 -3.0 -5.7 -0.3
Women
Mean height (cm) 163.1* 162.7 163.6 162.3 161.9 162.8 0.8 0.6 1.0
Mean weight (kg) 68.4* 66.4 70.5 70.1 68.1 72.1 -1.6 -1.9 -1.4
Mean BMI (kg/m2 ) 25.8* 25.0 26.5 26.6 25.9 27.4 -0.9 -1.0 -0.7
% obese (BMI 30.0 kg/m2 or more) 18.8* 15.4 22.8 23.2 19.3 27.6 -4.4 -6.5 -2.2
2005 Canadian Community Health Survey
Men
Mean height (cm) 176.4* 176.0 176.9 175.3 174.7 175.8 1.1 0.8 1.5
Mean weight (kg) 82.0* 81.0 83.0 83.9 82.8 84.9 -1.9 -2.2 -1.6
Mean BMI (kg/m2 ) 26.3* 26.0 26.6 27.3 27.0 27.7 -1.0 -1.2 -0.8
% obese (BMI 30.0 kg/m2 or more) 16.7* 14.0 19.9 26.2 23.1 29.4 -9.4 -11.9 -7.0
Women
Mean height (cm) 162.6* 162.1 163.1 162.1 161.5 162.6 0.6 0.3 0.8
Mean weight (kg) 66.6* 65.5 67.6 69.4 68.2 70.5 -2.8 -3.1 -2.4
Mean BMI (kg/m2 ) 25.2* 24.8 25.6 26.5 26.0 26.9 -1.3 -1.5 -1.1
% obese (BMI 30.0 kg/m2 or more) 16.0* 13.7 18.6 23.0 20.3 25.9 -7.0 -8.7 -5.3
* significantly different from estimate for measured (p < 0.05)
significantly different from corresponding estimate for 2008 Canadian Community Health Survey (p < 0.05)
Sources: 2008 Canadian Community Health Survey (subsample); 2007 to 2009 Canadian Health Measures Survey; 2005 Canadian Community Health Survey (subsample 2).