Date: Wed, 1 Jun 2011 10:29:53 -0700
Reply-To: Bruce Weaver <firstname.lastname@example.org>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Bruce Weaver <email@example.com>
Subject: Re: Kappa w/ unequal score ranges in SPSS 19
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The way to fix the non-square table problem is (or at least was) to use the
integer mode for CROSSTABS. E.g., if there are 5 possible ratings (1-5),
and r1 and r2 are the two raters:
CROSSTABS VARIABLES=r1 (1,5) r2 (1,5)
/TABLES=r1 by r2 / stat = kappa.
I don't have v19 yet, so cannot comment on what it is doing. What does your
CROSSTABS syntax look like?
> Hi all -
> I just upgraded to SPSS 19 and I went to run some syntax I wrote in SPSS
> 18. In SPSS 18, I was unable to compute kappa when my raters had unequal
> score ranges - that is, when the matrix for two raters was not
> symmetrical. For example, if rater 1 used scores of 1, 2, 3, 4, and 5 but
> rater 2 only used scores of 2, 3, 4, and 5 then SPSS 18 would not compute
> kappa. To compute kappa, I added in dummy variables to create a
> symmetrical matrix.
> It appears that in SPSS 19 this is not needed. That is, it appears that in
> version 19 unequal score ranges are no longer an issue, and SPSS will
> automatically correct for a non-symmetrical matrix.
> I was hoping that someone else can confirm this for me - I have been
> having trouble finding out whether or not this is the case.
"When all else fails, RTFM."
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