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Crit Care. 2003 Dec;7(6):451-9. Epub 2003 Nov 5.

Statistics review 7: Correlation and regression.

Author information

1
Senior Lecturer, School of Computing, Mathematical and Information Sciences, University of Brighton, Brighton, UK. v.bewick@brighton.ac.uk

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.

PMID:
14624685
PMCID:
PMC374386
DOI:
10.1186/cc2401
[Indexed for MEDLINE]
Free PMC Article

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