Map of Simcoe Muskoka

Healthy Eating Healthy Weights

Youth Body Mass Index (BMI)

Overall Results
By Sex
By Socioeconomic Status

Body mass index (BMI) is a ratio of weight to height (weight (kg)/height(m)2) and while it is not a direct measure of body fat, it is considered to be one of the most useful indicators of population health risks associated with overweight and obesity.

The classification of BMI for children and youth is different than for adults. Statistics Canada currently uses the World Health Organization (WHO) age-/sex-specific classification cut-offs for children and adolescents aged 5 to 19. The following table provides some example BMI cut-off scores for boys and girls between 12 and 17 years of age. For more information visit the following WHO site - http://www.who.int/growthref/who2007_bmi_for_age/en/index.html.

Child Body Mass Index (BMI) Cut-off Scores

AGE

BOYS

GIRLS

OVERWEIGHT

OBESE

OVERWEIGHT

OBESE

12.0

19.9

23.6

20.8

25.0

12.5

20.4

24.2

21.3

25.6

13.0

20.8

24.8

21.8

26.2

13.5

21.3

25.3

22.3

26.8

14.0

21.8

25.9

22.7

27.3

14.5

22.2

26.5

23.1

27.8

15.0

22.7

27.0

23.5

28.2

15.5

23.1

27.4

23.8

28.6

16.0

23.5

27.9

24.1

28.9

16.5

23.9

28.3

24.3

29.1

17.0

24.3

28.6

24.5

29.3

17.5

24.6

29.0

24.6

29.4

Adapted from the WHO BMI-for-age (5-19) tables available at http://www.who.int/growthref/who2007_bmi_for_age/en/index.html

Overall Results

According to the 2015 Ontario Student Drug Use and Health Survey (OSDUHS), approximately one-third (34% (29.2%, 38.1%)) of Simcoe Muskoka students (Grades 7-12) were considered to be overweight or obese according to the WHO BMI-for-age cut-offs. This was not significantly different than the 36% (34.7%, 38.0%) of overweight or obese Ontario students during this same time period.

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By Sex

In 2015 among Simcoe Muskoka students (Grades 7-12), significantly more male students were overweight or obese compared with female students: 37% (32.3%, 41.9%) for males vs. 30% (24.9%, 35.1%) for females.

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By Socioeconomic Status

In 2015 among Simcoe Muskoka students (Grades 7-12), significantly more students with lower perceived socioeconomic status (SES) were overweight or obese compared with students with higher perceived SES: 43% (31.8%, 54.9%) among those with lowest perceived SES vs. 29% (24.3%, 34.5%) among those with highest perceived SES.

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