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. Author manuscript; available in PMC: 2013 Jan 3.
Published in final edited form as: Environ Sci Technol. 2011 Dec 1;46(1):477–485. doi: 10.1021/es202340b

Table 1.

NHANES 1999–2006 population distribution by categorical covariates.

Variable Category N (%)
Sex Male 5102 (50.9)
Female 4924 (49.1)
Age group 6–12 1605 (16.0)
13–19 2866 (28.6)
20–50 3036 (30.3)
>50 2519 (25.1)
Race/ethnicity Mexican American 2641 (26.3)
Other Hispanic 404 (4.01)
Non-Hispanic White 4020 (40.1)
Non-Hispanic Black 2575 (25.7)
Other/Multi-racial 386 (3.85)