jp wrote:.
> >
> > Thankyou, this does help, although the data I have does not fit either of
> your examples. I have a single candidates answer sheet to 12 questions (each
> question is scored 1, 2, 3, or 4) which has been marked by 15 different
> examiners. I wish to have a single number to assess overall inter-examiner
> agreement. I had thought that interclass correlation wass the correct
> technique, but was told I should be using intraclass correlation instead,
> and have been unable to find a convincing explanation ever since.
see -- Shrout, P.E., and Fleiss, J.L "Intraclass
correlations: uses in assessing rater
reliability," Psychological Bulletin, 1979,
86, 420-428.
SAS has a macro available (INTERACC) that
computes the different types of ICCs. Included
in the macro is a good, brief explanation of the
specific ICC you should use.
Dave
.
.
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