Chen_2016_event_time    Function to generate event time in the
                        existence of cured population
Chen_2016_event_time_abovetime0
                        Function to generate event time based on Chen
                        2016 method for ongoing subject
Chen_2016_event_time_piecewise_exp_abovetime0
                        Function to generate event time with piecewise
                        exponential distribution for ongoing subject in
                        the existence of cured population
EventPredInCure-package
                        Event Prediction Including Cured Population
FH_test                 Fleming-Harrington weighted log-rank tests
SP_Chen_exponential     Survival probability function of the
                        exponential distribution with cured population
SP_Chen_log_logistic    Survival probability function of the
                        log-logistic distribution with cured population
SP_Chen_log_normal      Survival probability function of the log-normal
                        distribution with cured population
SP_Chen_piecewise_exponential
                        Survival probability function of the piecewise
                        exponential distribution with cured population
SP_Chen_weibull         Survival probability function of the Weibull
                        distribution with cured population
b4pst                   Function to calculate survival time and censor
                        variables before and post a time lag (delay
                        treatment effect time)
finalData               Final enrollment and event data after achieving
                        the target number of events
fitDropout              Fit time-to-dropout model
fitEnrollment           Fit enrollment model
fitEvent                Fit time-to-event model
getPrediction           Enrollment and event prediction
interimData1            Interim enrollment and event data before
                        enrollment completion
interimData2            Interim enrollment and event data after
                        enrollment completion
loglik_Chen_exponential
                        Log-likelihood function for exponential
                        distribution with cured population
loglik_Chen_log_logistic
                        Log-likelihood function for log-logistic
                        distribution with cured population
loglik_Chen_log_normal
                        Log-likelihood function for log-normal
                        distribution with cured population
loglik_Chen_piecewise_exponential
                        Log-likelihood function for
                        piecewise-exponential distribution with cured
                        population
loglik_Chen_weibull     Log-likelihood function for Weibull
                        distribution with cured population
predictEnrollment       Predict enrollment
predictEvent            Predict event time for ongoing subjects with or
                        without cured population.
smed                    Function to output summary statistics from
                        survfit function output
summarizeObserved       Summarize observed data
test_plot               Function to plot KM plot for time-to-event data
                        in simulation
test_procedure          Function to provide summary and test statistics
                        based on simulation.
tte                     Calculating log-rank test p-value, median time
                        from each arm, hazard ratio between two arms,
                        number of subjects and events in time-to-event
                        outcomes.
