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Navigation: STATISTICS WITH PRISM 9 > Diagnostic lab analyses

Comparing Methods with a Bland-Altman Plot

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Bland and Altman devised a simple, but informative, way of graphing the comparison of two assay methods: First measure multiple samples using both methods. Then plot the difference between the two measurements as a function of the average of the two measurements of each sample (your best estimate of the true value). The resulting graph is called a Bland-Altman plot

 

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