Analysis of Variance for Repeated Measurements Using Stata

Abstract

In this paper we present basic principles of analysis of quantitative data in three or more paired samples. Examples of normality testing, both manual calculations of repeated measurements analysis of variance (RM-ANOVA) and calculations using STATA software are described. We also discuss assumptions for using RM-ANOVA as well as the main principles of presentation of the results in scientific publications. The article gives only basic information on the use of RM-ANOVA in biomedical research and it does not substitute reading specialized literature.