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We estimate diagnostic accuracy\n(category-specific classification probabilities; for binary\ntests reduces to specificity and sensitivity, and also\npredictive values) and agreement statistics (percent agreement,\npercent agreement by category, Kappa (unweighted), Kappa\n(quadratic weighted) and symmetry tests (reduces to McNemar's\ntest for binary tests)). See: Katki HA, Li Y, Edelstein DW,\nCastle PE. Estimating the agreement and diagnostic accuracy of\ntwo diagnostic tests when one test is conducted on only a\nsubsample of specimens. Stat Med. 2012 Feb 28; 31(5)\n.", "License": "GPL-3", "LazyLoad": "yes", "URL": "https://dceg.cancer.gov/about/staff-directory/katki-hormuzd", "NeedsCompilation": "no", "Packaged": { "Date": "2026-06-01 10:08:14 UTC", "User": "root" }, "Author": "Hormuzd A. Katki [aut], David W. 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