Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: reliability with -icc- and -estat icc-


From   "JVerkuilen (Gmail)" <jvverkuilen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: reliability with -icc- and -estat icc-
Date   Tue, 26 Feb 2013 21:22:11 -0500

On Tue, Feb 26, 2013 at 9:03 PM, Nick Cox <njcoxstata@gmail.com> wrote:
> Psychometrics is not my field

It is mine, though. ;)


but my gut impression is that you really
> should use the scores. The context you cite is no doubt correct, but
> for comparing raters with each other the scores they gave are
> essential.

Yes, that's right, unless the transformation is desired to be done all
the time, but rank transforming is then a bad idea, most likely,
because it's massively lossy.


 Why is skewness implied to be a problem here? It's just one
> of the facts.

It's also not really that bad once you condition on person, except for rater 4.
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index