Journal
ANESTHESIOLOGY
Volume 116, Issue 1, Pages 182-185Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ALN.0b013e31823d7784
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- National Institute for Health Research, London, United Kingdom
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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 analyzed 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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