Benefits and Harms of Computed Tomography Lung Cancer Screening Strategies: A Comparative Modeling Study for the U.S. Preventive Services Task Force
Aged, 80 and over
Male
Lung Neoplasms
Models, Statistical
EMC NIHES-01-66-01
Smoking
EMC NIHES-02-65-01
Middle Aged
Risk Assessment
3. Good health
03 medical and health sciences
0302 clinical medicine
SDG 3 - Good Health and Well-being
Humans
Mass Screening
Female
Tomography, X-Ray Computed
Lung
Early Detection of Cancer
Aged
DOI:
10.7326/m13-2316
Publication Date:
2013-12-30T23:31:03Z
AUTHORS (19)
ABSTRACT
The optimum screening policy for lung cancer is unknown.To identify efficient computed tomography (CT) screening scenarios in which relatively more lung cancer deaths are averted for fewer CT screening examinations.Comparative modeling study using 5 independent models.The National Lung Screening Trial; the Prostate, Lung, Colorectal, and Ovarian Cancer Screening trial; the Surveillance, Epidemiology, and End Results program; and the U.S. Smoking History Generator.U.S. cohort born in 1950.Cohort followed from ages 45 to 90 years.Societal.576 scenarios with varying eligibility criteria (age, pack-years of smoking, years since quitting) and screening intervals.Benefits included lung cancer deaths averted or life-years gained. Harms included CT examinations, false-positive results (including those obtained from biopsy/surgery), overdiagnosed cases, and radiation-related deaths.The most advantageous strategy was annual screening from ages 55 through 80 years for ever-smokers with a smoking history of at least 30 pack-years and ex-smokers with less than 15 years since quitting. It would lead to 50% (model ranges, 45% to 54%) of cases of cancer being detected at an early stage (stage I/II), 575 screening examinations per lung cancer death averted, a 14% (range, 8.2% to 23.5%) reduction in lung cancer mortality, 497 lung cancer deaths averted, and 5250 life-years gained per the 100,000-member cohort. Harms would include 67,550 false-positive test results, 910 biopsies or surgeries for benign lesions, and 190 overdiagnosed cases of cancer (3.7% of all cases of lung cancer [model ranges, 1.4% to 8.3%]).The number of cancer deaths averted for the scenario varied across models between 177 and 862; the number of overdiagnosed cases of cancer varied between 72 and 426.Scenarios assumed 100% screening adherence. Data derived from trials with short duration were extrapolated to lifetime follow-up.Annual CT screening for lung cancer has a favorable benefit-harm ratio for individuals aged 55 through 80 years with 30 or more pack-years' exposure to smoking.National Cancer Institute.
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