EQUIVALENCE OF WEIGHTED KAPPA AND INTRACLASS CORRELATION COEFFICIENT AS MEASURES OF RELIABILITY
EQUIVALENCE OF WEIGHTED KAPPA AND INTRACLASS CORRELATION COEFFICIENT AS MEASURES OF RELIABILITY
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DOI：
10.1177/001316447303300309
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发表时间：
1973-01-01
影响因子：
2.7
通讯作者：
COHEN, J
中科院分区：
文献类型：
--
作者：
FLEISS, JL;COHEN, J
Kappa是针对偶然性校正的一致性比例，并在-1至+1范围内缩放，因此负值表示比偶然性一致性差，零表示完全偶然性一致性，正值表示比偶然性一致性好。一个统一的值表示完全一致。kappa的使用隐含地假设所有的分歧都是同样严重的。当研究者能够确定每种分歧的相对严重性时，他可以采用加权卡帕，即对偶然性进行校正后的加权一致率。
Kappa is the proportion of agreement corrected for chance, and scaled to vary from-1 to+ 1 so that a negative value indicates poorer than chance agreement, zero indicates exactly chance agreement, and a positive value indicates better than chance agreement. A value of unity indicates perfect agreement. The use of kappa implicitly assumes that all disagreements are equally serious. When the investigator can specify the relative serious-ness of each kind of disagreement, he may employ weighted kappa, the proportion of weighted agreement corrected for chance.