Anavex Life Sciences Corp (AVXL)

[dayneyus]

I suspect they are using MWU for all the data not just slide #6 JPM 1/12/23 as they have missing data and the groups are unpaired.

In this chapter, we introduced several of the more frequently used nonparametric tests for continuous data. The nonparametric tests are attractive because they do not require an assumption of the normal distribution. Even when the data do come from normal distributions, these nonparametric tests do not sacrifice much power in comparison to tests based on the normality assumption. Although these tests were designed to be used with continuous data, they are often used with ordered data as well. Their use with ordered data can create problems as there are likely to be more ties for ordered data than for continuous data. In the next chapter, we introduce methods for testing hypotheses about ordered or nominal data, as well as about continuous data that are grouped into categories.

https://www.sciencedirect.com/topics/mathematics/mann-whitney-u-test