Exemplary calculation of the alternative kappa statistic as proposed by Gwet (2002).
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Alternative chance agreement probability: e(y) = 2P1(1-P1). Approximate chance that a rater (A or B) classifies a subject into category “acceptance”. P1 = [(A1+B1)/2]/N. Alternative kappa statistic: AC1 = [p-e(y)]/[1-e(y)]. Where p = (A+D)/N.
创建时间：
2013-05-02
