Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content ++ Table 2-10 summarizes numbers needed to screen for commonly used tests. ++Table Graphic Jump LocationTable 2-10.Numbers needed to screen (NNS).View Table||Download (.pdf) Table 2-10. Numbers needed to screen (NNS). Disease Test Population NNS AAA Ultrasonography Ever smoking men, age 65–74 500 to prevent 1 AAA specific death over 5 years Osteoporosis DEXA Women 75–79 Women 65–69 Women 60–64 238 to prevent 1 hip fracture; 96 to prevent 1 vertebral fracture 556 to prevent 1 hip fracture over 5 years; 233 to prevent 1 vertebral fracture 1000 to prevent 1 hip fracture; 435 to prevent 1 vertebral fracture Breast cancer Mammography Women 60–69 Women 50–59 Women 40–49 320 to prevent 1 breast cancer death over 14 years 1138 to prevent 1 breast cancer death over 14 years 1618 to prevent 1 breast cancer death over 14 years Colorectal cancer Fecal occult blood testing Annual screening, patients over 50 Biennial screening 217 to prevent 1 colorectal cancer death 344–1250 to prevent 1 colorectal cancer death Lung cancer Low-dose CT Asymptomatic persons aged 55–74 with ≥ 30 pack year smoking history; former smokers must have quit within the past 15 years 320 to prevent 1 lung cancer death Prostate cancer PSA Men 55–69 1410 to prevent 1 prostate cancer death AAA, abdominal aortic aneurysm; DEXA, dual-energy x-ray bone absorptiometry; PSA, prostate-specific antigen. Your Access profile is currently affiliated with [InstitutionA] and is in the process of switching affiliations to [InstitutionB]. Please select how you would like to proceed. Keep the current affiliation with [InstitutionA] and continue with the Access profile sign in process Switch affiliation to [InstitutionB] and continue with the Access profile sign in process Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Error: Incorrect UserName or Password Username Error: Please enter User Name Password Error: Please enter Password Sign in Forgot Password? Forgot Username? Sign in via OpenAthens Sign in via Shibboleth You already have access! Please proceed to your institution's subscription. Create a free profile for additional features.