Universität zu Köln

Saugel, Bernd ORCID: 0000-0001-6619-0722, Grothe, Oliver and Wagner, Julia Y. (2015). Tracking Changes in Cardiac Output: Statistical Considerations on the 4-Quadrant Plot and the Polar Plot Methodology. Anesth. Analg., 121 (2). S. 514 - 525. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 0003-2999

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Abstract

When comparing 2 technologies for measuring hemodynamic parameters with regard to their ability to track changes, 2 graphical tools are omnipresent in the literature: the 4-quadrant plot and the polar plot recently proposed by Critchley et al. The polar plot is thought to be the more advanced statistical tool, but care should be taken when it comes to its interpretation. The polar plot excludes possibly important measurements from the data. The polar plot transforms the data nonlinearily, which may prevent it from being seen clearly. In this article, we compare the 4-quadrant and the polar plot in detail and thoroughly describe advantages and limitations of each. We also discuss pitfalls concerning the methods to prepare the researcher for the sound use of both methods. Finally, we briefly revisit the Bland-Altman plot for the use in this context.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Saugel, Bernd UNSPECIFIED orcid.org/0000-0001-6619-0722 UNSPECIFIED Grothe, Oliver UNSPECIFIED UNSPECIFIED UNSPECIFIED Wagner, Julia Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-397713
DOI:	10.1213/ANE.0000000000000725
Journal or Publication Title:	Anesth. Analg.
Volume:	121
Number:	2
Page Range:	S. 514 - 525
Date:	2015
Publisher:	LIPPINCOTT WILLIAMS & WILKINS
Place of Publication:	PHILADELPHIA
ISSN:	0003-2999
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PULSE-CONTOUR ANALYSIS; PULMONARY-ARTERY THERMODILUTION; LITHIUM DILUTION; AGREEMENT; SURGERY; PRECISION; BIOIMPEDANCE; METAANALYSIS; ALGORITHM; MONITORS Multiple languages Anesthesiology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/39771