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File:Bland-altman plot.png

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Summary

Description
English: An example of Bland-Altman disagreement plot with the same data set used by Bland and Altman in their original publication at Lancet (1996). The two extreme lines are the +2 and -2 standard deviation of the difference between two methods.
Date 2 August 2008 (upload date)
Source Own work
Author Dekisugi
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Creation

This plot was created by using the R statistical programming language. Here is the function:

bland_altman_plot <- function(method1,method2,
	xlab="Average", ylab="Difference")
{
	avgMean <- stack(mean(as.data.frame(t(cbind(method1,
		method2)))))$values
					
	diff <- method1 - method2
	plot(diff ~ avgMean,pch=16,ylim=c(-100,100),xlab=xlab,ylab=ylab)
	
	abline(h=mean(diff)-c(-2,0,2)*sd(diff),lty=2)
}

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
w:en:Creative Commons
attribution share alike
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  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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2 August 2008

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Date/TimeThumbnailDimensionsUserComment
current02:30, 2 August 2008Thumbnail for version as of 02:30, 2 August 20081,008 × 1,008 (39 KB)Dekisugi~commonswiki{{Information |Description={{en|1=An example of Bland-Altman disagreement plot with the same data set used by Bland and Altman in their original publication at Lancet (1996).}} |Source=Own work by uploader |Author=Dekisugi |Date=02-08-20

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