Extract the Power results
The Pocock Alpha Spending Function
The Haybittle method of Boundary Construction
The O'Brien-Fleming Alpha Spending Function
The Wang-Tsiatis Power Alpha Spending Function
Stack a dataset
My Survfit
Create a skeleton compound PwrGSD object
The Lan-Demets method of Boundary Construction
The Stochastic Curtailment method of Boundary Construction
Calculate Power in a Group Sequential Design
Weighted Integrated Survival function test
Weighted log-rank test
Convert CDF Odds Ratio to Logged Relative Risks
Verifies the results of "GrpSeqBnds" via simulation
Aggregated Hazard
Create a subset of a "cpd.PwrGSD" object
Computes efficacy and futility boundaries
Cumulative-risk ratios to risk ratios
Calender year rates to Study Year Rates
Convert a "PwrGSD" object to a "boundaries" object
Conditional type I and type II error probabilities given current value of the test
statistic
Relative risk to Relative Cumulative Mortality
Lookup values for a piecewise constant function
Converts a stochastic curtailment boundary (conditional type I or
II error probability) into a (efficacy or futility) boundary on the
standardized Z scale
A function for computing the probability density for the group
sequentially monitored test statistic.
Function to extract the 'detail' component from a PwrGSD
object
Mayo Clinic Lung Cancer Data
A utility function for forming differences
Plot Method for cpd.PwrGSD objects
A function for computing the bias adjusted point estimate for a
statistic observed to cross the efficacy boundary.
Relative cumulative mortality to Relative Risk