Displaying 1 result from an estimated 1 matches for "specialcond".
2007 Mar 27
1
basic handling of data.frame
...o R but wan't to use it to compute the statistics of my medical study.
The study includes several parameters for a number of patients. Each
parameter was assessed by a number of readers, once with a special
condition, once without.
Now I have a data.frame with colums like:
PatientID, ReaderID, SpecialCond(yes/no), Parameter1, Parameter2.....
the rows are not sorted, and the table is not complete (e.g. some
readers didn't read all cases under all conditions).
What I would like to do now is for example compute Cohen's Kappa
(ckappa from package(psy)) for Parameter1 under special condition
ag...