Choosing a comparison method

For multiple comparisons with a control:

·    use the Dunnett, Bonferroni, Sidak, or Fisher methods.

·    Dunnett's method is generally more powerful than the Bonferroni and Sidak methods.

·    Fisher's method does not control the simultaneous confidence level.

For all pairwise comparisons:

·    use the Tukey, Bonferroni, Sidak, or Fisher methods.

·    Tukey's method is generally more powerful than the Bonferroni and Sidak methods.

·    Fisher's method does not control the simultaneous confidence level.