| Discussion: | Traffic Jam Applet tool |
| Topic: | Bland Altman Plot |
| Related Item: | http://mathforum.org/mathtools/tool/10/ |
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| Subject: | Bland Altman plot |
| Author: | Martin Bland |
| Date: | Feb 6 2004 |
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Dear All,
I would like to ask for information about the bland altman plot. I am not a math
person so I am not familiar with it. I want to compare the results obtained from
different sets of duplicate samples BUT using two different collecting/storage
tubes (tubes 1 and 2). I was told that using mean, SD and %CV is not the right
way to determine the suitability for using tube 2 to subsitute tube 1 but that
using the Bland Altman Plot is the appropriate way to do it. Could anyone please
explain the principle behind this type of plot and how am I going to interprete
it? I thank you in advance for any comments/advice that you can give me.
Best wishes!
You can find out lots about this in our 1986 Lancet paper, vol i, pages
307-310. The full paper and much more on the topic of measurement studies in
medicine is on my web site:
http://www-users.york.ac.uk/~mb55/
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