Power in a Group Sequential Design


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Documentation for package ‘PwrGSD’ version 1.16

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%,% The paste operator
agghaz Aggregated Hazard
as.boundaries Convert a "PwrGSD" object to a "boundaries" object
CDFOR2LRR Convert CDF Odds Ratio to Logged Relative Risks
CondPower Conditional type I and type II error probabilities given current value of the test statistic
cpd.PwrGSD Create a skeleton compound PwrGSD object
CRRtoRR Cumulative-risk ratios to risk ratios
CY2TOShaz Calender year rates to Study Year Rates
DX A utility function for forming differences
Elements Create a subset of a "cpd.PwrGSD" object
GrpSeqBnds Computes efficacy and futility boundaries
Haybittle The Haybittle method of Boundary Construction
IntSurvDiff Weighted Integrated Survival function test
LanDemets The Lan-Demets method of Boundary Construction
lookup Lookup values for a piecewise constant function
lung Mayo Clinic Lung Cancer Data
mystack Stack a dataset
mysurvfit My Survfit
ObrienFleming The O'Brien-Fleming Alpha Spending Function
paste The paste operator
plot.cpd.PwrGSD Plot Method for cpd.PwrGSD objects
Pocock The Pocock Alpha Spending Function
Pow The Wang-Tsiatis Power Alpha Spending Function
Power Extract the Power results
PwrGSD Calculate Power in a Group Sequential Design
RCM2RR Relative cumulative mortality to Relative Risk
RR2RCM Relative risk to Relative Cumulative Mortality
SC The Stochastic Curtailment method of Boundary Construction
SimGSB Verifies the results of "GrpSeqBnds" via simulation
wtdlogrank Weighted log-rank test