Tob Control 1999;8:290-300 ( Autumn )

Medical costs of smoking in the United States: estimates, their validity, and their implications

Kenneth E Warner^a, Thomas A Hodgson^b, Caitlin E Carroll^c

^a Department of Health Management and Policy, School of Public Health, University of Michigan, Ann Arbor, Michigan, USA, ^b National Center for Health Statistics, Hyattsville, Maryland, ^c The Lewin Group, Falls Church, Virginia

Correspondence to: Dr K Warner, Department of Health Management and Policy, School of Public Health, University of Michigan, 109 South Observatory, Ann Arbor, Michigan 48109-2029, USA; kwarner{at}umich.edu

Received 10 Feb 1999; Revision received 11 May 1999; Accepted 30 May 1999.

OBJECTIVETo compare estimates of the medical costs of smoking in the United States and to consider their relevance to assessing the costs of smoking in developing countries and the net economic burden of smoking.
DATA SOURCESA Medline search through early 1999 using keywords "smoking" and "cost", with review of article reference lists.
STUDY SELECTIONPeer-reviewed papers examining medical costs in a single year, covering the non-institutionalised American population.
DATA EXTRACTIONMethods underlying study estimates were identified, described, and compared with attributable expenditure methodology in the literature dealing with costs of illness. Differences in methods were associated with implied differences in findings.
DATA SYNTHESISWith one exception, the studies find the annual medical costs of smoking to constitute approximately 6-8% of American personal health expenditures. The exception, a recent study, found much larger attributable expenditures. The lower estimates may reflect the limitation of analysis to costs associated with the principal smoking-related diseases. The higher estimate derives from analysis of smoking-attributable differences in all medical costs. However, the finding from the most recent study, also considering all medical costs, fell in the 6-8% range.
CONCLUSIONSThe medical costs of smoking in the United States equal, and may well exceed, the commonly referenced figure of 6-8%. This literature has direct methodological relevance to developing countries interested in assessing the magnitude of their current cost-of-smoking burden and their future burdens, with differences in tobacco use histories and the availability of chronic disease treatment affecting country-specific estimates. The debate over the use of gross or net medical cost estimates is likely to intensify with the proliferation of lawsuits against the tobacco industry to recover expenditures on tobacco-produced disease.


Keywords: medical costs; smoking; United States

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© 1999 by Tobacco Control
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