New‐onset and idiopathic thrombotic thrombocytopenic purpura: Incidence, diagnostic validity, and potential risk factors

Abstract

In a general U.S. population, the incidence rate of confirmed new-onset and idiopathic TTP was lower than previously reported, but appears to be on the rise. Our findings suggest that administrative claims data are useful for identifying outpatient drug exposures and comorbidities potentially associated with TTP.