Elsevier

The Lancet

Volume 327, Issue 8476, 8 February 1986, Pages 307-310
The Lancet

Measurement
STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENT

https://doi.org/10.1016/S0140-6736(86)90837-8Get rights and content

Abstract

In clinical measurement comparison of a new measurement technique with an established one is often needed to see whether they agree sufficiently for the new to replace the old. Such investigations are often analysed inappropriately, notably by using correlation coefficients. The use of correlation is misleading. An alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability.

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