Exercise

# Factorial designs: generating odds ratios

The trial referred to in the previous exercise found no evidence to suggest that the effect of one supplement depended on whether the other was administered.

Using the `fact.data`

dataset, we will now explore the infection odds ratios for each supplement while ignoring whether the other was administered, using the `oddsratio.wald()`

function within the `epitools`

package. This package and the `fact.data`

dataset have been loaded for the session.

Instructions

**100 XP**

- Use the
`oddsratio.wald()`

function to generate the odds ratio for the effect of`glutamine`

on`infection`

. - Repeat this for selenium.