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Weight was self-reported and converted to the nearest kilogram for respondents answering in pounds.  Similarly, height was self-reported and converted into metres for respondents answering in feet and inches.

Body mass index (BMI) was calculated by dividing weight in kilograms by height in metres squared.  According to Health Canada guidelines,13 individuals whose BMI was less than 18.5 were considered underweight; those whose BMI ranged from 18.5 to 24.9 were considered to be an acceptable weight; those whose BMI ranged from 25.0 to 29.9, overweight; and those whose BMI was 30 or more, obese.

Three adult age groups were identified:  18 to 33, 34 to 49 and 50 to 64.