| FitDat | Fit Historical Survival Data Assuming the Failure Time Follows the Weibull Distribution |
| LRT | Conduct Interim or Final Analyses Using One-Sample Log-Rank Test for the Optimal Two-Stage Trials |
| Optimal.KJ | Optimal Two-Stage Design Using One-Sample Log-Rank Test with Unrestricted Follow-Up |
| Optimal.rKJ | Optimal Two-Stage Design Using One-Sample Log-Rank Test with Restricted Follow-Up |
| Sim_KJ | Calculate Empirical Power by Simulation for the Optimal Two-Stage Design Using One-Sample Log-Rank Test with Unrestricted Follow-Up |
| Sim_rKJ | Calculate Empirical Power by Simulation for the Optimal Two-Stage Design Using One-Sample Log-Rank Test with Restricted Follow-Up |