I'm testing the effect of two different informational treatments on individuals' attitudes towards certain policies.
I know I need to adjust my p-values for multiple comparisons. Using the Bonferroni method I would have to divide my alpha (e.g. p = 0.05) by the number of comparisons I'm making i.e. α/??.
However, I'm not sure what to count in the ??
- I'm testing the effect of treatment on preferences for 8 different policies
- I have 3 treatment groups (control, treatment 1, treatment 2), and am interested in the marginal effect of treatment (e.g. treatment 1 vs control, treatment 2 vs control)
- I also include 13 (binary) covariates/control variables
I think (hope!) the value of ?? should be 8 i.e. one for each policy - but can anyone advise?