A Comparison between Atlantic Canadian and National Correction Equations to Improve the Accuracy of Self-Reported Obesity Estimates in Atlantic Canada

Table 2

Mean body mass index (BMI) and mean difference between measured and self-reported or corrected BMI, by collection method and sex, household population aged 18 years or older, Atlantic Canada, 2007-2008.

Mean BMI; (kg/m^2)	Collection method		Correction method		Difference
	Measured	SR	Atlantic CEs	National CEs	SR minus measured	95%; CI	Atlantic corrected minus measured	95%; CI	National corrected minus measured	95%; CI
Both sexes	28.4	27.0*	28.2	28.3	−1.4	−1.7,; −1.0	−0.2	−0.6, 0.1	−0.1	−0.4, 0.3
Males	29.1	27.7*	28.8	28.8	−1.4	−2.0,; −0.8	−0.3	−0.9, 0.3	−0.3	−0.9, 0.3
Females	27.7	26.3*	27.5	27.8	−1.4	−1.9,; −0.9	−0.2	−0.7, 0.3	0.1	−0.4, 0.6

^*Significantly different from measured estimate (P < 0.0001).
Abbreviations: CE, correction equation; CI, confidence interval; SR, self-reported.
Data source: 2007-2008 Canadian Community Health Survey, Statistics Canada.