Journal of the American Academy of Dermatology · 2008 · 520 citations · 28 references
MedicineDermatologyClinical EpidemiologyEpidemiologic MethodsEpidemiologyInflammatory Skin DiseasesInflammatory Skin DisordersPsoriatic ArthritisPsoriasiform DermatitisPsoriasis SurveillancePsoriatic Disease
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The Measurement of Observer Agreement for Categorical Data
J. Richard Landis, Gary G. Koch · Biometrics · 1977 · 78.9K citations · Full text
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