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重复性、真实性和联系的测量应分别用组内相关系数(rI)、一致性相关系数(rC)和积矩相关系数(rP)。本文证明 rI≤rC≤rP,相等性仅在特殊情况下成立。在测量重复性、真实性和联系时,如果错用不恰当的相关系数,通常会高估重复性,低估联系,高估(如果用 rP)或低估(如果用 rI)真实性,本文相应地对几种 kappa 系数的应用亦作了讨论。
Measurements of reproducibility, authenticity, and association should use intraclass correlation coefficients (rI), consistency correlation coefficients (rC), and product-moment correlation coefficients (rP), respectively. This paper proves that rI≤rC≤rP, equality is only valid in special cases. When measuring repetitiveness, authenticity, and connection, if inappropriate correlation coefficients are used, usually overestimating reproducibility, underestimating contact, overestimating (if using rP) or underestimating (if using rI) authenticity, this article correspondingly The application of several kappa coefficients has also been discussed.