| Characteristic | 1988–1994 | 1999–2000 | 2001–2002 | 2003–2004 | 2005–2006 |
|---|---|---|---|---|---|
| Ages 4–17 | |||||
| Total | |||||
| Any detectable cotinine | 87.4 | 64.2 | 52.6 | 61.1 | 48.9 |
| Blood cotinine more than 1.0 ng/mL | 23.7 | 16.9 | 16.1 | 17.1 | 11.6 |
| Ages 4–11 | |||||
| Total | |||||
| Any detectable cotinine | 87.7 | 64.4 | 55.1 | 63.7 | 51.4 |
| Blood cotinine more than 1.0 ng/mL | 25.7 | 17.7 | 18.1 | 18.7 | 12.3 |
| Ages 12–17 | |||||
| Total | |||||
| Any detectable cotinine | 87.0 | 63.9 | 49.6 | 57.9 | 46.0 |
| Blood cotinine more than 1.0 ng/mL | 21.1 | 16.0 | 13.6 | 15.0 | 10.8 |
| NOTE: "Any detectable cotinine" indicates blood cotinine levels at or above 0.05 nanograms per milliliter (ng/mL), the detectable level of cotinine in the blood in 1988–1994. Cotinine levels are reported for nonsmoking children only. The average (geometric mean) blood cotinine level in children living in homes where someone smokes was 1.0 ng/mL in 1988–1994.1 | |||||
| SOURCE: Centers for Disease Control and Prevention, National Center for Health Statistics, National Health and Nutrition Examination Survey. | |||||
| 1 Mannino, D.M., Caraballo, R., Benowitz, N., and Repace, J. (2001). Predictors of cotinine levels in U.S. children: Data from the Third National Health and Nutrition Examination Survey. CHEST, 120, 718–724 | |||||
