Analysis of variance (ANOVA) reveals some disadvantages, such as non-robustness against heteroscedastic or non-normal errors and using difference to overall mean as effect sizes only. As an alternative the multiple contrast test comparing to the overall mean is proposed for 7 effect sizes: ratio-to-OM, quantiles for both ratio or differences, odds ratios for continuous data, odds ratio for proportions, risk ratio/differences, relative effect size for continuous up to discrete data, and hazard ratio. Using CRAN packages the related analysis is simple.
翻译:分析方差(ANOVA)具有一些缺点,例如对异方差或非正态误差的非稳健性以及仅使用相对于总体均值的差异作为效应大小。作为替代,本文提出了多重对比检验,用于7种效应大小的比较:相对于总体均值的比率,比率或差异的分位数,针对连续型数据的比率、针对比例的比率、风险比/差异、连续型直到离散型数据的相对效应大小和危险比。相关分析使用CRAN包可简单完成。