Assessment of interchangeability rate between 2 methods of measurements: An example with a cardiac output comparison study.

ABSTRACT: The Bland-Altman (BA) and percentage error (PE) methods have been previously described to assess the agreement between 2 methods of medical or laboratory measurements. This type of approach raises several problems: the BA methodology constitutes a subjective approach to interchangeability, whereas the PE approach does not take into account the distribution of values over a range. We describe a new methodology that defines an interchangeability rate between 2 methods of measurement and cutoff values that determine the range of interchangeable values. We used a simulated data and a previously published data set to demonstrate the concept of the method. The interchangeability rate of 5 different cardiac output (CO) pulse contour techniques (Wesseling method, LiDCO, PiCCO, Hemac method, and Mo

SUBMITTER: Lorne E 

PROVIDER: S-EPMC5839816 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature