Table 3. Harms of screening.

Scenario	Screens per 100,000	CT examinations per 100,000 (includes screenings)	Average screening examinations per person screened	% of cases overdiagnosed	% of screened cases overdiagnosed
USPSTF (ever eligible only)	1,520,632	1,776,046	16.2	4.6%	8.4%
Never-smokers at average risk	2,179,173	2,544,605	22.5	5.2%	9.5%
Never-smokers at 2 times average risk	2,170,544	2,534,532	22.5	5.2%	9.6%
Never-smokers at 5 times average risk	2,144,601	2,504,249	22.2	5.3%	9.6%
Never-smokers at 10 times average risk	2,101,248	2,453,645	21.9	5.3%	9.6%
Never-smokers at 15 times average risk	2,057,745	2,402,865	21.5	5.3%	9.6%
Never-smokers at 20 times average risk	2,014,118	2,351,940	21.1	5.3%	9.6%
Never-smokers at 35 times average risk	1,882,721	2,198,562	19.9	5.3%	9.6%

Table notes: Abbreviations: United States Preventive Services Task Force (USPSTF)