Table 4
Mean waist circumference based on World Health Organization (WHO) and National Institutes of Health (NIH) protocols, by age group, sex and body mass index (BMI) category, household population aged 3 to 79, Canada, 2009 to 2011

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Table summary
 This table displays the results of mean waist circumference based on world health organization (who) and national institutes of health (nih) protocols. The information is grouped by age group/sex/ bmi category (appearing as row headers), sample size , measured, nih predicted, from and to, calculated using number and centimetres units of measure (appearing as column headers).
Age group/Sex/BMI category Sample size Measured NIH predicted
NIH WHO Difference (NIH minus WHO) NIH predicted Difference (NIH predicted minus NIH measured) 95% confidence interval
from to
Number Centimetres
Ages 3 to 19  
Boys  
Normal weight 438 63.4 62.5 0.9Note * 63.3 -0.1 -0.3 0.1
Overweight 139 69.7 68.7 1.0Note * 69.6 -0.1 -0.5 0.2
Obese 111 87.0 85.4 1.6Note * 86.7 -0.4Note * -0.7 0.0
Girls  
Normal weight 467 62.5 60.5 2.0Note * 62.3 -0.1 -0.4 0.1
Overweight 137 71.9 69.6 2.3Note * 71.5 -0.4 -1.0 0.2
Obese 58 90.2 87.7 2.5Note * 90.2 0.1 -1.0 1.1
Ages 20 to 79  
Men  
Normal weight 219 83.0 81.7 1.3Note * 83.0 0.0 -0.5 0.5
Overweight 360 95.9 95.1 0.8Note * 95.9 0.1 -0.4 0.5
Obese class I 174 107.6 107.3 0.3 107.8 0.2 -0.3 0.7
Obese class II/III 67 125.1 125.1 0.0 125.3 0.3 -0.4 0.9
Women  
Normal weight 365 78.2 75.5 2.7Note * 78.0 -0.2 -0.6 0.2
Overweight 270 91.6 89.6 2.0Note * 91.8 0.2 -0.3 0.7
Obese class I 156 101.9 100.2 1.7Note * 102.2 0.3 -0.2 0.9
Obese class II/III 97 117.4 115.9 1.5Note * 117.8 0.4 -0.7 1.4
* significantly different from zero (p < 0.05)
Notes: Estimates are generated from sub-sample B. Estimates for underweight are not included because of small sample sizes.
Source: 2009 to 2011 Canadian Health Measures Survey.