The added cost largely stems from additional treatments needed after continuing smokers fail to respond to first-line cancer therapies, and totals roughly US$11,000 per person, the study team calculates.While smoking cessation after a cancer diagnosis has been found to improve survival odds, studies to date have not provided a clear picture of how treatment outcomes and costs are affected when smokers don't quit, researchers note in JAMA Network Open.
About one in five cancer patients are current smokers, the researchers estimate based on data from a 2014 U.S. Surgeon General report. Building on this report, they created a model to calculate the added cost of treating smokers.They assumed 30 percent of nonsmokers fail to respond to initial treatment and that 20 percent of cancer patients are current smokers.
Across 1.6 million patients diagnosed with cancer in the U.S. each year, this would add up to potential added annual costs of US$3.4 billion, the study team concludes.
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