目的介绍可靠性评价指标组内相关系数及其统计软件实现。方法结合实例阐明各种不同类型组内相关系数的意义、计算和SAS、SPSS软件实现。结果选择恰当的ICC取决于以下三个方面,选择的模型是one-way model或two-way model;采用single measure或average measure;选择absolute agreement或consistency。结论研究者应根据资料类型和分析目的选择恰当的组内相关系数,SAS和SPSS可提供计算结果。
Objective To introduce the reliability assessment measure intraclass correlation coefficient and corresponding software procedures.Methods Meanings,formulas,SAS and SPSS procedures for different types of intraclass correlation coefficients were clarified by examples.Results Appropriate intraclass correlation coefficients were selected by determining one-way model or two-way model;single measure or average measure;absolute agreement or consistency.Conclusion Researchers should select right intraclass correlation coefficients according to data and analysis objectives.SAS and SPSS can provide computation results.