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Critical Care
Published in: Critical Care 6/2003

01-12-2003 | Review

Statistics review 7: Correlation and regression

Authors: Viv Bewick, Liz Cheek, Jonathan Ball

Published in: Critical Care | Issue 6/2003

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Abstract

The present review introduces methods of analyzing the relationship between two quantitative variables. The calculation and interpretation of the sample product moment correlation coefficient and the linear regression equation are discussed and illustrated. Common misuses of the techniques are considered. Tests and confidence intervals for the population parameters are described, and failures of the underlying assumptions are highlighted.
Literature
1.
2.
Kirkwood BR, Sterne JAC: Essential Medical Statistics 2 Edition Oxford: Blackwell Science 2003.
3.
4.
Bland M: An Introduction to Medical Statistics 3 Edition Oxford: Oxford University Press 2001.
5.
Bland M, Altman DG: Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1986, i: 307-310.CrossRef
6.
Zar JH: Biostatistical Analysis 4 Edition New Jersey, USA: Prentice Hall 1999.
7.
Altman DG: Practical Statistics for Medical Research London: Chapman & Hall 1991.
Metadata
Title
Statistics review 7: Correlation and regression
Authors
Viv Bewick
Liz Cheek
Jonathan Ball
Publication date
01-12-2003
Publisher
BioMed Central
Published in
Critical Care / Issue 6/2003
Electronic ISSN: 1364-8535
DOI
https://doi.org/10.1186/cc2401

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