This class project entailed rank ordering and scoring of diseases based on negative and positive findings.
Disclaimer: This tool should not be used for actual clinical reasoning.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4665459/ - apply bayes to single test; maybe explains how to combine multiple tests (AA) http://icfjournal.org/index.php/icfj/article/viewFile/29/22 - first page has nice set of definition for sens/spec/PPV/NPV