title: Patient-specific errors in agreement between International Normalized Ratios measured by a whole blood coagulometer and by a routine plasma-based method.
abstract: We applied a new statistical method to improve comparisons between systems measuring prothrombin time (PT) by splitting disagreement into systematic errors, which can be eliminated, and random errors, which can not. We found that the disagreement between International Normalized Ratio (INR) measurements based on plasma and whole blood was significantly patient-dependent.
authors.forename: Jørn
authors.initials: J
authors.lastname: Attermann
authors.forename: Niels T
authors.initials: NT
authors.lastname: Andersen
authors.forename: Helle
authors.initials: H
authors.lastname: Korsgaard
authors.forename: Marianne
authors.initials: M
authors.lastname: Maegaard
authors.forename: J Michael
authors.initials: JM
authors.lastname: Hasenkam
mesh_terms: D001780:Blood Coagulation Tests / Q000379:methods* / Q000592:standards; D003951:Diagnostic Errors; D006801:Humans; D019934:International Normalized Ratio / Q000592:standards*; D011517:Prothrombin Time