法令禁煙可減少小朋友氣喘住院率
Smoking Ban Improves Asthma Rates in Children
In Scotland, asthma hospital admission rates in children have dropped 18% per year since the smoking ban was instituted in 2006.
In March 2006, Scotland banned smoking in enclosed public places, including restaurants and pubs. Investigators used a national database to tally all asthma hospital admissions for children younger than 15 years in Scotland between January 2000 and October 2009.
Before the smoking ban, admission rates for asthma in children increased by a mean of 5.2% per year. After the ban, the annual rate declined by 18.2% relative to the rate in March 2006. In adjusted analyses, rates of decline were similar among preschool (–18.4%) and school-age (–20.8%) children.
Comment: The authors discuss potential limitations of this observational study, including lack of data for individual patients and for those with asthma exacerbations who did not require hospitalization, and the possibility that other factors reduced hospital admission rates. However, substantial physiologic and epidemiologic data support a causal association, and the ban reportedly has led to voluntary reduction of smoking in homes.
— Howard Bauchner, MD
Published in Journal Watch Pediatrics and Adolescent Medicine September 15, 2010
Citation(s):
Mackay D et al. Smoke-free legislation and hospitalizations for childhood asthma. N Engl J Med 2010 Sep 16; 363:1139.
In Scotland, asthma hospital admission rates in children have dropped 18% per year since the smoking ban was instituted in 2006.
In March 2006, Scotland banned smoking in enclosed public places, including restaurants and pubs. Investigators used a national database to tally all asthma hospital admissions for children younger than 15 years in Scotland between January 2000 and October 2009.
Before the smoking ban, admission rates for asthma in children increased by a mean of 5.2% per year. After the ban, the annual rate declined by 18.2% relative to the rate in March 2006. In adjusted analyses, rates of decline were similar among preschool (–18.4%) and school-age (–20.8%) children.
Comment: The authors discuss potential limitations of this observational study, including lack of data for individual patients and for those with asthma exacerbations who did not require hospitalization, and the possibility that other factors reduced hospital admission rates. However, substantial physiologic and epidemiologic data support a causal association, and the ban reportedly has led to voluntary reduction of smoking in homes.
— Howard Bauchner, MD
Published in Journal Watch Pediatrics and Adolescent Medicine September 15, 2010
Citation(s):
Mackay D et al. Smoke-free legislation and hospitalizations for childhood asthma. N Engl J Med 2010 Sep 16; 363:1139.
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