Updated Review of Major Cancer Risk Factors and Screening Test Use in the United States in 2018 and 2019, with a Focus on Smoking Cessation

Cancer prevention and early detection efforts are central to reducing cancer burden. Herein, we present estimates of cancer risk factors and screening tests in 2018 and 2019 among US adults, with a focus on smoking cessation. Cigarette smoking reached a historic low in 2019 (14.2%) partly because 61.7% (54.9 million) of all persons who had ever smoked had quit. Yet, the quit ratio was <45% among lower-income, uninsured, and Medicaid-insured...