... and preliminary validation of an administrative claims-based algorithm for the effectiveness of medications for rheumatoid arthritis Jeffrey R Curtis1,#, John W Baddley1,2, Shuo Yang1, ... corresponds to the article as it appeared upon acceptance. Copyedited and fully formatted PDF and full text (HTML) versions will be made available soon. Derivation and preliminary validation of an administrative ... and specificity, unlike PPV and NPV, should be less dependent on the prevalence in the population, and more reflective of the test itself, lessening the impact of any unique features of the...