The hazards and benefits associated with smoking and smoking cessation in Asia

A meta-analysis of prospective studies

K. Nakamura, R. Huxley, A. Ansary-Moghaddam, M. Woodward

Research output: Contribution to journalArticle

Abstract

Objective: To provide the most reliable evidence as to the nature of the associations between smoking and cause-specific illness, as well as the expected benefits from quitting smoking, in studies conducted in Asia, where smoking remains popular among men. Data sources: Studies published between January 1966 and October 2008, identified in the Medline search strategy with medical subject headings, in addition to studies from the Asia Pacific Cohort Studies Collaboration. Study selection: Studies were considered to be relevant if they were prospective studies, in an Asian setting that reported on the association between smoking, quitting and cause-specific illness. Data extraction: Two reviewers independently screened all identified articles for possible inclusion and extracted data. Data synthesis: The pooled relative risks (RRs) for incidence or mortality, comparing current to never smokers were always significantly higher than unity; the highest was for lung cancer: 3.54 (95% confidence interval 3.00 to 4.17). The pooled RRs for former smokers (compared to never smokers) were also always significantly higher than unity, and were lower than in current smokers, for coronary heart disease, stroke, lung and upper aero-digestive tract cancer. Only for respiratory disease was the RR for former smokers higher than that for current smokers. Conclusions: This meta-analysis has shown that, despite the relative immaturity of the smoking epidemic in Asia, smoking is unquestionably a major contributor to ill health and death. However, the beneficial effects of quitting are not yet always apparent, most probably because quitting is a consequence of ill health and the relative unpopularity of smoking cessation in many Asian populations.

Original languageEnglish (US)
Pages (from-to)345-353
Number of pages9
JournalTobacco Control
Volume18
Issue number5
DOIs
StatePublished - Oct 2009
Externally publishedYes

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Smoking Cessation
Meta-Analysis
smoking
Smoking
Prospective Studies
Medical Subject Headings
cancer
illness
Information Storage and Retrieval
Health
cause
heart disease
Coronary Disease
stroke
Gastrointestinal Tract
health
Lung Neoplasms
Cohort Studies
Stroke
Confidence Intervals

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health(social science)

Cite this

The hazards and benefits associated with smoking and smoking cessation in Asia : A meta-analysis of prospective studies. / Nakamura, K.; Huxley, R.; Ansary-Moghaddam, A.; Woodward, M.

In: Tobacco Control, Vol. 18, No. 5, 10.2009, p. 345-353.

Research output: Contribution to journalArticle

Nakamura, K. ; Huxley, R. ; Ansary-Moghaddam, A. ; Woodward, M. / The hazards and benefits associated with smoking and smoking cessation in Asia : A meta-analysis of prospective studies. In: Tobacco Control. 2009 ; Vol. 18, No. 5. pp. 345-353.
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