TY - JOUR AU - Pham, Thanh V. AU - Kromrey, Jeffrey D. AU - Chen, Yi-Hsin AU - Kim, Eun Sook AU - Nguyen, Diep T. AU - Wang, Yan PY - 2020/10/07 Y2 - 2024/03/29 TI - ANOVA_robust: A SAS Macro for Parametric Tests of Mean Differences in One-Factor ANOVA Models JF - Journal of Statistical Software, Code Snippets JA - J. Stat. Soft. VL - 95 IS - 2 SE - Code Snippets DO - 10.18637/jss.v095.c02 UR - https://www.jstatsoft.org/index.php/jss/article/view/v095c02 SP - 1 - 16 AB - Testing the equality of several independent group means is a common statistical practice in the social sciences. The traditional analysis of variance (ANOVA) is one of the most popular methods. However, the ANOVA F test is sensitive to violations of the homogeneity of variance assumption. Many alternative tests have been developed in response to this problem of the F test. These tests include some modifications of the ANOVA F test and others based on the structured means modeling technique. This paper provides a SAS macro for testing the equality of group means using thirteen methods including the regular ANOVA F test. In addition, this paper summarizes the results of a simulation study that compares the performance of these tests in terms of their Type I error rate under different conditions, especially under violations of the homogeneity of variance assumption. ER -