组内相关
指南
可靠性(半导体)
医学
等级间信度
内部评级可靠性
临床实习
阅读(过程)
考试(生物学)
计算机科学
统计
数据挖掘
医学物理学
数学
置信区间
物理疗法
病理
心理测量学
评定量表
生物
物理
古生物学
功率(物理)
量子力学
法学
政治学
作者
Terry K. Koo,Mae Y. Li
标识
DOI:10.1016/j.jcm.2016.02.012
摘要
Intraclass correlation coefficient (ICC) is a widely used reliability index in test-retest, intrarater, and interrater reliability analyses. This article introduces the basic concept of ICC in the content of reliability analysis. There are 10 forms of ICCs. Because each form involves distinct assumptions in their calculation and will lead to different interpretations, researchers should explicitly specify the ICC form they used in their calculation. A thorough review of the research design is needed in selecting the appropriate form of ICC to evaluate reliability. The best practice of reporting ICC should include software information, “model,” “type,” and “definition” selections. When coming across an article that includes ICC, readers should first check whether information about the ICC form has been reported and if an appropriate ICC form was used. Based on the 95% confident interval of the ICC estimate, values less than 0.5, between 0.5 and 0.75, between 0.75 and 0.9, and greater than 0.90 are indicative of poor, moderate, good, and excellent reliability, respectively. This article provides a practical guideline for clinical researchers to choose the correct form of ICC and suggests the best practice of reporting ICC parameters in scientific publications. This article also gives readers an appreciation for what to look for when coming across ICC while reading an article.
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