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Bland & Altman and Paired t-Test Difference Plots

The Bland & Altman method comparison compares two methods of measurement or two paired variables, and provides a plot of difference vs. mean, in which the standard deviation of differences between measurements made by the two methods provides an index of the comparability of the methods.

In Aabel, the Bland & Altman method for comparing two methods of measurement or two paired variables provides:

A Bland & Altman Difference Plot

A Paired t-Test Difference Plot