Respondents were asked to report their weight and height, from which their body mass index (BMI) was then calculated and classified as either underweight, normal weight, overweight, or obese. See Background Notes for further information on the calculation of BMI.
The highest rate of obesity was seen among those aged 55 to 64 years with 30.6% of females and 29.3% of males in this age group being classified as such.
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