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ᅟ Immunochemical fecal occult blood tests (iFOBTs) are increasingly used for colorectal cancer (CRC) screening. In our preceding observational study, sensitivity for detecting advanced colorectal neoplasms by iFOBT was 70.8% among users of low-dose acetylsalicylic acid compared with 35.9% among non-users (p = 0.001), whereas there were only very small differences in specificity. In receiver operating...
In the evaluation of cancer screening tests, cancer-free controls are often matched to cancer cases on factors such as sex and age. We assessed the potential merits and pitfalls of such matching using an example from colorectal cancer (CRC) screening.We compared sex and age distribution of CRC cases and cancer-free people undergoing screening colonoscopy in Germany in 2006 and 2007. We assessed specificity...
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