Fig 3. Cross-testing ROC curves of ANN for data non-randomly split between screened and non-screened NHIS respondents (TRIPOD 2b).

Using the reduced dataset the ANN was cross-tested between the group of survey respondents (NHIS years 2000, 2005, 2010, and 2015 only) screened for CRC by colonoscopy/sigmoidoscopy and the remaining year group.