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Tob Control. 2006 Aug;15(4):302-7.

Smoke-free laws and secondhand smoke exposure in US non-smoking adults, 1999-2002.

Author information

  • 1Centers for Disease Control and Prevention, National Center for Health Statistics, Hyattsville, Maryland 20782, USA.

Abstract

OBJECTIVES:

To investigate the relationship between smoke-free law coverage and secondhand smoke (SHS) exposure in the United States non-smoking adult population.

DESIGN:

We used data from the 1999-2002 National Health and Nutrition Examination Survey, a cross-sectional survey designed to monitor the health and nutritional status of the US population. Serum cotinine levels were available for 5866 non-smoking adults from 57 survey locations. Each location was categorised into one of three groups indicating extensive, limited, and no coverage by a smoke-free law.

MAIN OUTCOME MEASURES:

The proportion of adults with SHS exposure, defined as having serum cotinine levels > or = 0.05 ng/ml.

RESULTS:

Among non-smoking adults living in counties with extensive smoke-free law coverage, 12.5% were exposed to SHS, compared with 35.1% with limited coverage, and 45.9% with no law. Adjusting for confounders, men and women residing in counties with extensive coverage had 0.10 (95% confidence interval (CI) 0.06 to 0.16) and 0.19 (95% CI 0.11 to 0.34) times the odds of SHS exposure compared to those residing in counties without a smoke-free law.

CONCLUSIONS:

These results support the scientific evidence suggesting that smoke-free laws are an effective strategy for reducing SHS exposure.

PMID:
16885579
[PubMed - indexed for MEDLINE]
PMCID:
PMC2563609
Free PMC Article

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