In the Contingency platform, use the Relative Risk option to calculate risk ratios for 2 x 2 contingency tables. Confidence intervals also appear in the report. For more information about this method, see Agresti (1990, sect. 3.4.2). See Example of the Relative Risk Option.
When you select the Relative Risk option, the Choose Relative Risk Categories window appears. You can select a single response and factor combination, or you can calculate the risk ratios for all combinations of response and factor levels.
Note: If there are Control Level and Target Level column properties specified for both variables, the Choose Relative Risk Categories does not appear.