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- W2766045210 abstract "The faecal immunochemical test (FIT) is replacing the guaiac faecal occult blood test in colorectal cancer screening. Increased uptake and FIT positivity will challenge colonoscopy services. We developed a risk prediction model combining routine screening data with FIT concentration to improve the accuracy of screening referrals.Multivariate analysis used complete cases of those with a positive FIT (⩾20 μg g-1) and diagnostic outcome (n=1810; 549 cancers and advanced adenomas). Logistic regression was used to develop a risk prediction model using the FIT result and screening data: age, sex and previous screening history. The model was developed further using a feedforward neural network. Model performance was assessed by discrimination and calibration, and test accuracy was investigated using clinical sensitivity, specificity and receiver operating characteristic curves.Discrimination improved from 0.628 with just FIT to 0.659 with the risk-adjusted model (P=0.01). Calibration using the Hosmer-Lemeshow test was 0.90 for the risk-adjusted model. The sensitivity improved from 30.78% to 33.15% at similar specificity (FIT threshold of 160 μg g-1). The neural network further improved model performance and test accuracy.Combining routinely available risk predictors with the FIT improves the clinical sensitivity of the FIT with an increase in the diagnostic yield of high-risk adenomas." @default.
- W2766045210 created "2017-11-10" @default.
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- W2766045210 date "2017-11-02" @default.
- W2766045210 modified "2023-10-06" @default.
- W2766045210 title "Risk-adjusted colorectal cancer screening using the FIT and routine screening data: development of a risk prediction model" @default.
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- W2766045210 doi "https://doi.org/10.1038/bjc.2017.375" @default.
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