CASE STUDIES IN BIOMETRY: Chapter 16.

Modeling Interrater Agreement for Pathological Features of Choroidal Melanoma

B. Michele Melia, Marie Diener-West

The file ch16b.dat contains the degree of necrosis (tissue
death) data for 3 raters.  The first field contains a patient identifier,
and the second, third, and fourth fields contain the code for degree of
necrosis as assigned by raters A, B, and C, respectively.  The coding
scheme is:

1=None
2=Less than 10% of cells
3=Greater than or equal to 10% of cells


The collaborative Ocular Melanoma Study (COMS) owns the
copyright to this dataset;  these data are considered preliminary due
to the ongoing nature of the COMS clinical trials.