Two-Stage design for ordinal outcomes

This program generates two-stage designs for testing H_0T ∩ H_0D in a Phase II single arm oncology trial, where H_0T is a null hypothesis about the tumor response rate and and H_0D is a null hypothesis about disease control rate (Ivanova et al., 2012).
Ivanova, A, Monaco, J and Stinchcombe, T. (2012). Efficient designs for phase II oncology trials with ordinal outcome. Statistics and Its Interface, 5, 463-469.

Type I error rate, α (one-sided)		* *
Power of H0T ∩ H0D, 1 - β		* *
Power of H0T, 1 – βT		* *
Power of H0D, 1 – βD		* *
Tumor Response probability of poor drug, p0T	* *
Disease Control probability of poor drug, p0D	* *
Tumor Response probability of good drug, pAT	* *
Disease Control probability of good drug, pAD	* *