Kappa coefficient calculation using multiple ratings per subject: a special communication.
The purpose of this special communication is to describe the application of the Kappa coefficient for the estimation of interobserver agreement. Kappa is a preferred statistic for the estimation of the accuracy of nominal and ordinal data in clinical research by physical therapists. A brief introduction to the properties of the Kappa coefficient is given, and a special case of Kappa for multiple ratings per subject is explained. A FORTRAN program, written specifically for the multiple-ratings situation, is described.
Haley
S M
SM
Research and Training Center in Rehabilitation and Childhood Trauma, Tufts University School of Medicine, New England Medical Center Hospitals, Boston, MA 02111.
Osberg
J S
JS
D001330:Electronic Data Processing; D006801:Humans; D008433:Mathematics; D026741:Physical Therapy Modalities; D012984:Software; D013223:Statistics as Topic