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st: inter-rater agreement for multiple raters and continuous variables

From   Harrison Alter <>
Subject   st: inter-rater agreement for multiple raters and continuous variables
Date   Tue, 7 May 2013 16:52:20 -0700

Hello Statalisters,

I am working with Stata 11.2 on a mac platform.

I have a dataset of 47 patients, each with 106 variables.  Each of
these patient's charts was abstracted by 2 raters, of a pool of 3: EL,
SH and RO.

The data are in wide format, so that each observation looks something
like this:


The outcomes of interest are scores on a 16-point symptom scale, and
total drug dose in milligrams,10 outcomes in all, all continuous.

I would like to calculate a measure of inter-rater agreement, focusing
on the outcomes of interest.  I understand that kappa works best with
dichotomous outcomes, and "loneway" seems to be appropriate for 2
raters.  I would like to perform some measure of intra-class


(1) Is this the right approach?
(2) What is the right analytic test?
(3) Can I do it in wide or must I reshape?

Happy to provide any further details that might help in solving my problem.

Thanks for your consideration,

Harrison Alter
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