Smoke-free air laws and asthma prevalence, symptoms, and severity among nonsmoking youth

Melanie S. Dove, Douglas W. Dockery, Gregory N. Connolly

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

OBJECTIVE: We investigated the association between smoke-free laws and asthma prevalence, symptoms, and severity among nonsmoking youth (aged 3-15 years). METHODS: We examined data from the 1999-2006 National Health and Nutrition Examination Survey, a cross-sectional survey designed to monitor the health and nutritional status of the US population. Survey locations were dichotomized as having or not having at least 1 smoke-free workplace, restaurant, or bar law at the county or state level that covered the entire county population. Asthma prevalence was assessed as self-reported current asthma and as ever having asthma with current symptoms. Asthmatic symptoms included persistent wheeze, chronic night cough, and wheeze-medication use. We also examined asthma severity (asthma attack or emergency-department visit for asthma) and persistent ear infection. RESULTS: Smoke-free laws were not associated with current asthma but were significantly associated with lower odds of asthmatic symptoms (odds ratio [OR]: 0.67 [95% confidence interval (CI): 0.48-0.93]) among nonsmoking youth. The association between smoke-free laws and ever having asthma with current symptoms approached significance (OR: 0.74 [95% CI: 0.53-1.03]). Smoke-free laws were associated with lower odds of asthma attacks (OR: 0.66 [95% CI: 0.28 -1.56]) and emergency-department visits for asthma (OR: 0.55 [95% CI: 0.27-1.13]), although these results were not statistically significant. CONCLUSIONS: Our results suggest that smoke-free laws reduce asthmatic symptoms, including persistent wheeze, chronic night cough, and wheeze-medication use in nonsmoking youth.

Original languageEnglish (US)
Pages (from-to)102-109
Number of pages8
JournalPediatrics
Volume127
Issue number1
DOIs
StatePublished - Jan 1 2011
Externally publishedYes

Fingerprint

Smoke
Asthma
Air
Odds Ratio
Confidence Intervals
Cough
Hospital Emergency Service
Restaurants
Nutrition Surveys
Nutritional Status
Workplace
Population
Health Status
Ear
Cross-Sectional Studies

Keywords

  • Adolescents
  • Asthma
  • Children
  • National health and nutrition examination survey
  • Tobacco control policy

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

Cite this

Smoke-free air laws and asthma prevalence, symptoms, and severity among nonsmoking youth. / Dove, Melanie S.; Dockery, Douglas W.; Connolly, Gregory N.

In: Pediatrics, Vol. 127, No. 1, 01.01.2011, p. 102-109.

Research output: Contribution to journalArticle

Dove, Melanie S. ; Dockery, Douglas W. ; Connolly, Gregory N. / Smoke-free air laws and asthma prevalence, symptoms, and severity among nonsmoking youth. In: Pediatrics. 2011 ; Vol. 127, No. 1. pp. 102-109.
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