Table C
Regression coefficients relating selected characteristics to difference† between measured and self-reported body mass index (BMI kg/m2), household population aged 12 years or older, Canada excluding territories, 2005

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  Males Females
Regression coefficient (B) 95% confidence interval Standardized regression coefficient (beta) Regression coefficient (B) 95% confidence interval Standardized regression coefficient (beta)
Age group
12 to 24 years 0.38* 0.01 to 0.74 0.09 0.19 -0.22 to 0.61 0.04
25 to 44 years -0.01 -0.29 to 0.28 0.00 -0.07 -0.34 to 0.20 -0.02
45 to 64 years‡ … … … … … …
65 to 79 years 0.41* 0.06 to 0.75 0.07 0.21 -0.21 to 0.63 0.03
80 years or older 0.29 -0.14 to 0.73 0.02 0.57* 0.07 to 1.07 0.06
Household income decile
1 to 3 (lowest) 0.17 -0.06 to 0.40 0.04 -0.01 -0.26 to 0.25 0.00
4 to 7‡ … … … … … …
8 to 10 (highest) 0.11 -0.12 to 0.33 0.03 0.17 -0.15 to 0.49 0.04
Immigrant status
Immigrant (0 to 10 years in Canada) -0.20 -0.63 to 0.22 -0.03 0.22 -0.10 to 0.54 0.03
Immigrant (11 or more years in Canada) 0.00 -0.26 to 0.27 0.00 0.21 -0.05 to 0.47 0.04
Canadian-born‡ … … … … … …
Leisure-time physical activity level
Active 0.10 -0.12 to 0.32 0.03 0.31* 0.06 to 0.56 0.06
Moderate 0.09 -0.14 to 0.32 0.02 0.19* 0.01 to 0.38 0.04
Inactive‡ … … … … … …
End-digit preference for weight
Yes 0.09 -0.12 to 0.29 0.02 0.11 -0.04 to 0.27 0.03
No‡ … … … … … …
Measured weight (kg) 0.06* 0.05 to 0.07 0.57 0.06* 0.05 to 0.08 0.52
Measured height (cm) -0.10* -0.12 to -0.09 -0.48 -0.08* -0.10 to -0.06 -0.31
Intercept 13.33   9.64  
Model information
R2 0.29   0.28  
Sample size 2,111 2,422
† measured minus self-reported
‡ reference category
* significantly different from estimate for reference category or from 0 for continuous variables (p < 0.05)
Source: Statistics Canada, 2005 Canadian Community Health Survey (subsample 2).