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OA 06 - Global Tobacco Control and Epidemiology I (ID 662)
- Event: WCLC 2017
- Type: Oral
- Track: Epidemiology/Primary Prevention/Tobacco Control and Cessation
- Presentations: 1
OA 06.01 - Costs and Cost-Effectiveness of Smoking Cessation Within an Organized CT Lung Cancer (LC) Screening Program (ID 9642)
15:45 - 17:30 | Author(s): W. Flanagan
Low-dose CT (LDCT) screening of smokers at high risk of developing lung cancer has been shown to reduce LC-specific and overall mortality. A retrospective analysis of the National Lung Screening Trial (NLST) data suggests that smoking cessation contributed to the mortality reduction. Pilot LDCT screening programs are being implemented in Ontario with smoking cessation integrated. The Canadian Partnership Against Cancer with Statistics Canada have developed a microsimulation model (OncoSim-LC, version 2.5) that projects the impact of cancer control measures on LC incidence, mortality and cost. Assuming that each annual visit for LDCT is a teachable moment to promote smoking cessation, we have modelled the potential cost and cost-effectiveness of integrating cessation into an organized screening program.
OncoSim-LC incorporates Canadian demographic characteristics, risk factors, cancer management approaches and outcomes and resource utilization to assess clinical, economic and healthcare system impacts. We compare a base case of organized screening with no cessation to various scenarios of screening with cessation. Modelling assumptions included: annual screening of 55-74 year olds with 30+ pack year smoking history, target participation rate reached over 10 years; one cessation intervention (nicotine replacement therapy + varenicline + 12 weeks of counselling) costs $490; up to 10 cessation attempts per eligible individual dependent on screening encounters; a permanent quit rate of 5% per cessation attempt. Cost-effectiveness was estimated with a lifetime horizon, health system perspective and 1.5% discount rate. Costs are in 2016 CAD.
Cessation within a screening program with 60% recruitment and 70% rescreening (adherence) would cost approximately $76 million (undiscounted) per year for 2017-2036 or 8% of the total cost of screening, treatment and cessation. Compared to screening with no cessation, approximately 110 fewer incident cases and 50 fewer lung cancer deaths would occur on average per year for 2017-2036 and cost $14,000/QALY (lifetime horizon). 90% recruitment and 80% rescreening would result in 260 fewer deaths and cost of $24,000/QALY. At a doubled permanent quit rate of 10%, screening with cessation would cost $6,000/QALY. A 50% increase in the cost of the cessation intervention would decrease cost-effectiveness to $22,000/QALY.
Based on the OncoSim-LC model, a cessation program within an organized LDCT screening program would cost well under $50,000/QALY even over multiple quit attempts. Integrating robust smoking cession initiatives within a LDCT screening program could save lives and be relatively cost-effective.
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