Multiple Testing Correction

This drop-down menu enables you to apply multiple testing corrections for testing multiple hypotheses.

Available options are described in the table below

Multiple Testing Correction Method1The Bonferroni and Šidák methods are modifications of the FDR method.	Definition
(blank space)	• Select this option for no p-values correction.
Bonferroni	• Specifies that the Bonferroni adjustments (number of tests p-value) be computed for each test. • Note: These adjustments can be extremely conservative and should be viewed with caution.
FDR	• Requests adjusted p-values by using the linear step-up method of Benjamini and Hochberg (1995)2Benjamini, Y. and Hochberg, Y. (1995). Controlling the False Discovery Rate: A Practical and Powerful Approach to Multiple Testing. Journal of the Royal Statistical Society, B 57: 289–300.. • These p-values do not control the familywise error rate, but they do control the false discovery rate in some cases
Sidak	• Computes the Šidák adjustment for each test. • Note: These adjustments are slightly less conservative than the Bonferroni adjustments, but they still should be viewed with caution.

To Specify a Multiple Testing Correction:

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Make a selection using the drop-down menu.

For Additional Information

Refer to p-Value Adjustments for more details about each of these methods.