search for: parameter1withspecial

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2007 Mar 27
1
basic handling of data.frame
...d 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 against no special condition. Therefore I need a table with colums: Parameter1WithSpecial, Parameter1WithoutSpecial And the data should be matched by PatID and ReaderID. How do I get this kind of table? Also how would I compute Kappa for Reader1 against Reader2? Please help me understanding how these transformations would be done in R.... Thanks, Henning