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Table 1 Description of the total population and three study subpopulations (in percent)

From: Diagnostic criteria patterns of U.S. children with Metabolic Syndrome: NHANES 1999–2002

Characteristics Full sample of 2–18 year olds with dietary and medical data Group a Group b Group c
  (n = 7,672) (n = 3,467) (n = 1,064) (n = 641)
Number of children represented n = 63,642,060 n = 20,845,577 n = 7,681,593 n = 3,598,335
Females 49 48 50 43
Ethnic group     
Non-Hispanic white 61 61 66 54
Non-Hispanic black 14 15 13 19
Mexican 12 12 9 14
Other 12 12 12 12
Household income c     
<1.3 PIR 39 39 38 44
1.3–1.84 PIR 12 13 13 11
1.85–3.4 PIR 19 20 19 18
>3.5 PIR 29 28 30 28
Weight status d     
Health-y weight 62 61 62 59
At risk for Overweight 15 15 16 16
Overweight 23 24 22 25
  1. a Study populations:
  2. Group a): Non-missing data: ≥ three criteria but missing blood glucose (2–18 year olds)
  3. Group b) Non-missing data: ≥ three criteria & blood glucose, not overweight or obeseb (12–18 year olds)
  4. Group c) Non-missing data: ≥ three criteria & blood glucose, not overweight or obeseb (12–18 year olds)
  5. b Using International Obesity Task Force (IOTF) standards,
  6. c Poverty Income Ratio (PIR),
  7. d CDC gender specific BMI-for-Age growth chart: healthy weight (6–84th percentile), at risk for overweight (85–94th percentile), overweight (≥ 95th percentil)