title: A methodology to quantify the differences between alternative methods of heart rate variability measurement.
abstract: This work proposes a systematic procedure to report the differences between heart rate variability time series obtained from alternative measurements reporting the spread and mean of the differences as well as the agreement between measuring procedures and quantifying how stationary, random and normal the differences between alternative measurements are. A description of the complete automatic procedure to obtain a differences time series (DTS) from two alternative methods, a proposal of a battery of statistical tests, and a set of statistical indicators to better describe the differences in RR interval estimation are also provided. Results show that the spread and agreement depend on the choice of alternative measurements and that the DTS cannot be considered generally as a white or as a normally distributed process. Nevertheless, in controlled measurements the DTS can be considered as a stationary process.
authors.affiliation: Group of Biomedical and Electronic Instrumentation at the Department of Electronic Engineering of the Universitat Politècnica de Catalunya BARCELONATECH (UPC), C/ Jordi Girona 1-3, Edifici C-4, 08034 Barcelona, Spain.
authors.forename: M A
authors.initials: MA
authors.lastname: García-González
authors.forename: M
authors.initials: M
authors.lastname: Fernández-Chimeno
authors.forename: F
authors.initials: F
authors.lastname: Guede-Fernández
authors.forename: V
authors.initials: V
authors.lastname: Ferrer-Mileo
authors.forename: A
authors.initials: A
authors.lastname: Argelagós-Palau
authors.forename: L
authors.initials: L
authors.lastname: Álvarez-Gómez
authors.forename: E
authors.initials: E
authors.lastname: Parrado
authors.forename: J
authors.initials: J
authors.lastname: Moreno
authors.forename: L
authors.initials: L
authors.lastname: Capdevila
authors.forename: J
authors.initials: J
authors.lastname: Ramos-Castro
mesh_terms: D004562:Electrocardiography; D006334:Heart Function Tests / Q000379:methods*; D006339:Heart Rate; D013997:Time Factors