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Measured child body mass index (BMI), by age group and sex, household population aged 2 to 17 excluding pregnant females, Canada


                                  Measured child body mass index
  Total Neither overweight nor obese Overweight Obese
  number number % number % number %
2004  
Total, 2 to 17 years 6,184,425 4,561,372 73.8 1,116,840 18.1 506,213 8.2
Males 3,177,843 2,320,807 73.0 567,963 17.9 289,073 9.1
Females 3,006,582 2,240,565 74.5 548,877 18.3 217,139 7.2
2 to 11 years 3,669,733 2,780,278 75.8 619,039 16.9 270,416 7.4
Males 1,857,760 1,426,706 76.8 288,868 15.5 142,186 7.7
Females 1,811,974 1,353,572 74.7 330,172 18.2 128,230 7.1
2 to 5 years 1,348,426 1,058,739 78.5 204,534 15.2 85,152 6.3
Males 684,326 551,625 80.6 89,872 13.1 42,829 E 6.3 E
Females 664,099 507,114 76.4 114,662 17.3 42,323 E 6.4 E
6 to 11 years 2,321,308 1,721,539 74.2 414,505 17.9 185,264 8.0
Males 1,173,433 875,081 74.6 198,996 17.0 99,357 8.5
Females 1,147,874 846,458 73.7 215,510 18.8 85,907 7.5
12 to 17 years 2,514,691 1,781,094 70.8 497,800 19.8 235,796 9.4
Males 1,320,083 894,101 67.7 279,095 21.1 146,887 11.1
Females 1,194,608 886,993 74.2 218,705 18.3 88,910 7.4
12 to 14 years 1,290,592 911,624 70.6 264,893 20.5 114,075 8.8
Males 708,125 473,031 66.8 156,447 22.1 78,647 11.1
Females 582,467 438,593 75.3 108,446 18.6 35,428 E 6.1 E
15 to 17 years 1,224,100 869,471 71.0 232,908 19.0 121,721 9.9
Males 611,958 421,070 68.8 122,648 20.0 68,240 E 11.2 E
Females 612,141 448,400 73.3 110,260 18.0 53,482 8.7

1. Data source: Statistics Canada, Canadian Community Health Survey, Nutrition, 2004
2. Body mass index (BMI) is calculated by dividing the respondent's body weight (in kilograms) by their height (in metres) squared.
3. The index is: neither overweight nor obese; overweight; obese.
4. Body mass index (BMI) for children is different from that of adults as they are still maturing. This variable classifies the measured BMI of children aged 2 to 17 as "obese" or "overweight" according to the age-and-sex-specific BMI cut-off points as defined by Cole and others. The Cole cut-off points are based on pooled international data (Brazil, Great Britain, Hong Kong, Netherlands, Singapore and United States) for BMI and linked to the internationally accepted adult BMI cut-off points of 25 (overweight) and 30 (obese). Respondents who do not fall within the categories of "obese" or "overweight" (as defined by Cole and others) have been classified by the Canadian Community Health Survey (CCHS) as "neither overweight nor obese".
5. Bootstrapping techniques were used to produce the coefficient of variation (CV) and 95% confidence intervals (CIs).
6. Data with a coefficient of variation (CV) from 16.6% to 33.3% are identified by an (E) and should be interpreted with caution.
7. Data with a coefficient of variation (CV) greater than 33.3% were suppressed (F) due to extreme sampling variability.
8. CANSIM table 105-2002.
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