Bland-Altman Method of Comparison

[Yughaber]

I am trying to compare pressure points from two different devices. These points have been collected at different times during the day from multiple locations where these devices have been set up. I want to use the Bland-Altman method, however, I am confused if I should combine my points collected at different times during the day under just the pressure point of one device and compare it versus the second device regardless of timestamp. 

I guess I am more confused if for this method I have to only have two variables or can I have more?

Thanks!

[sbxkoenk]

Hello,

Bland-Altman is not in the documentation, so you have to code it up yourself.

Here are some resources that might help you out:

Paper 1815-2018
Simple Methods for Repeatability and Comparability: Bland-Altman Plots, Bias, and Measurement Error
Maribeth Johnson and Jennifer Waller, Augusta University
https://www.sas.com/content/dam/SAS/support/en/sas-global-forum-proceedings/2018/1815-2018.pdf

Validating the Bland-Altman Method of Agreement
Ryan Fernandez, University of Nevada-Las Vegas ; George Fernandez, University of Nevada-Reno

https://www.lexjansen.com/wuss/2009/pos/POS-Fernandez.pdf

Also, look on this communities site. --> Numerous topics on Bland-Altman.
Same for << Bland-Altman SAS >> search on the internet.

Good luck,

Koen

[sbxkoenk]

Hello,

I have just seen this Community Library article and wanted to make you aware of it:

User Friendly SAS application: Enhanced Bland-Altman Method of Agreement
Posted Thursday | by gcjfernandez_gmail_com
https://communities.sas.com/t5/SAS-Communities-Library/User-Friendly-SAS-application-Enhanced-Bland-...

Cheers,

Koen