Paul R. Yarnold
Optimal Data Analysis, LLC
This study evaluates the number of migraine attacks experienced in a clinical trial of two alternative treatments, for a sample of 67 patients. Several conventional statistical methods were used to compare the number of attacks between treatments, but all of these methods were compromised by violations of their underlying assumptions. Only an exact test motivated by an eyeball spline was revealing. UniODA was used to compare treatments, and identified the latter effect.