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
censor_surv             censor survival event
censordata              Censor Events Given a Fixed Dropout Rate
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
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.
