Stuart Maxwell Test for Categorical Shift
Suppose that you are examining a categorical response with more than 2 levels before and after a treatment. You can test the existance of a categorical shift using Stuart-Maxwell's test.
Power Calculation Parameters
To input multiple values, seperate them by a comma.
Power Calculation Explanation
- Solve For
- The unknown you are interested in solving for.
- The sample size used to test the hypothesis.
- The \(\alpha\) (Type I error rate) level of the hypothesis test.
- The power (1 - Type II error rate) of the hypothesis test.
- Number of Levels
- The number of levels of the endpoint being studied. This number is the dimension of the contingency table.
- Contingency Table
- The table representing pre and post treatment counts for each level. If you prefer, you can enter the raw probabilities here and you will get the same result, as long as the sum of the table is 1.
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- Chow, S., Shao, J., & Wang, H. (2003), Sample size calculations in clinical research, New York: Marcel Dekker.