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. 2018 Dec 7;67(48):1342–1346. doi: 10.15585/mmwr.mm6748a3

FIGURE 2.

The figure shows the percentage of nonsmokers aged 3–11 years with evidence of secondhand smoke exposure (serum cotinine levels 0.05–10 ng/mL) by race and ethnicity from the National Health and Nutrition Examination Survey in the United States during 1988–2014.

Percentage of nonsmokers aged 3–11 years* with evidence of secondhand smoke exposure (serum cotinine levels 0.05–10 ng/mL), by race and ethnicity†— National Health and Nutrition Examination Survey (NHANES), United States, 1988–2014

* Nonsmokers aged ≥4 years for NHANES III 1988–1994.

† Because of sample design, racial and Hispanic origin categories were limited to non-Hispanic whites, non-Hispanic blacks, and Mexican Americans across all survey cycles.