| censordata | Censor Events Given a Fixed Dropout Rate |
| censor_surv | censor survival event |
| column_freq | Calculate the Combination Frequency of Several Columns within a Data Frame |
| cov_simu | Simulate Covariates Matrix Based on User Provided Factor Information |
| dummy_convert | Convert Categorical Data to Dummy Variables |
| LambdaCensor | Find the Censor Hazard Function Parameter for Proportional Hazard Model Given a Fixed Dropout Rate |
| LambdaCensor_betapw | Find the Censor Hazard Function Parameter for Nonproportional Hazard Model Given a Fixed Dropout Rate |
| linear_accrual | Simulate Accrual Time Where the Accrual Rate is Linearly Increased |
| objfunction | Objective Function for the Finding of Censor Hazard Function Parameter for Proportional Hazard Model |
| objfunction_betapw | Objective Function for The Finding of Censor Hazard Function Parameter for Nonproportional Hazard Model |
| projection | Event and Trial Projection |
| projection_simulation | Project Final Event Numbers or Trial Stop Time Based on Interim Analysis Data |
| randomize_trt | Generate Block Randomized Treatment Label Based on Covariates Matrix |
| randomize_trt2 | Generate Block Randomized Treatment Label Based on Covariates Matrix for Two Arm Trial |
| run_simulation | Run Clinical Trial Simulations Based on User Defined Trial Settings |
| run_simulation_simsurv | Run Clinical Trial Simulations Based on survival data generated by simsurv package |
| self_blockrand | Block Randomization |
| step_accrual | Simulate Accrual Time |
| surv_data_simulation | Simulate Survival Data |
| trial_data_simulation | Simulate Clinical Trial with Accrual Time and Trial Stop Rules |
| weibullsim | Simulate Event Time with weibull Hazard Function |
| weibullsim_betapw | Simulate Event Time with weibull Hazard Function and Piecewise Hazard Ratios |
| weibullsim_pw | Simulate event time with weibull hazard function. The parameters can be piecewise. |