A study was undertaken by a research group to examine creatine kinase-MB (CK-MB) levels in type 2 diabetic mellitus (T2DM) patients receiving statin medication. Participants were placed into four treatment groups. T2DM patients in Groups I, II, and III had received statin treatment (atorvastatin, simvastatin, and rosuvastatin, respectively) for at least 6 months. Group IV included T2DM individuals who had not received statin medication. Which of the following statistical tests is most appropriate for comparing CK-MB levels in this study's Groups I, II, III, and IV?

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Eductional Objective: The analysis of variance test compares three groups' means. The test necessitates the use of a categorical independent variable (ie, exposure) to split the study pool into three groups and a quantitative dependent variable (ie, outcome) for which an average (eg, mean) may be derived.

A Study Was Undertaken by a Research Group to Examine