Background Lack of information about the effect of insurancecoverage on the demand for and use of smoking-cessation serviceshas prevented widescale adoption of coverage for such services.
Methods In a longitudinal, natural experiment, we compared theuse and cost effectiveness of three forms of coverage with thoseof a standard form of coverage for smoking-cessation servicesthat included a behavioral program and nicotine-replacementtherapy. The study involved seven employers and a total of 90,005adult enrollees. The standard plan offered 50 percent coverageof the behavioral program and full coverage of nicotine-replacementtherapy. The other plans offered 50 percent coverage of boththe behavioral program and nicotine-replacement therapy (reducedcoverage), full coverage of the behavioral program and 50 percentcoverage of nicotine-replacement therapy (flipped coverage),or full coverage of both the behavioral program and nicotine-replacementtherapy.
Results Estimated annual rates of use of smoking-cessation servicesranged from 2.4 percent (among smokers with reduced coverage)to 10 percent (among those with full coverage). Smoking-cessationrates ranged from 28 percent (among users with full coverage)to 38 percent (among those with standard coverage). The estimatedpercentage of all smokers who would quit smoking per year asa result of using the services ranged from 0.7 percent (withreduced coverage) to 2.8 percent (with full coverage). The averagecost to the health plan per user who quit smoking ranged from$797 (with standard coverage) to $1,171 (with full coverage).The annual cost per smoker ranged from $6 (with reduced coverage)to $33 (with full coverage). The annual cost per enrollee rangedfrom $0.89 (with reduced coverage) to $4.92 (with full coverage).
Conclusions Use of smoking-cessation services varies accordingto the extent of coverage, with the highest rates of use amongsmokers with full coverage. Although the rate of smoking cessationamong the benefit users with full coverage was lower than therates among users with plans requiring copayments, the effecton the overall prevalence of smoking was greater with full coveragethan with the cost-sharing plans.
Source Information
From the Center for Health Studies (S.J.C., L.C.G., C.P.) and the Department of Preventive Care (T.M.), Group Health Cooperative of Puget Sound; and the Department of Health Services, School of Public Health and Community Medicine, University of Washington (S.J.C.) both in Seattle.
Address reprint requests to Dr. Curry at the Center for Health Studies, Group Health Cooperative of Puget Sound, 1730 Minor Ave., Suite 1600, Seattle, WA 98101.
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