Power in a Group Sequential Design

Documentation for package ‘PwrGSD’ version 2.3.6

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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
detail	Function to extract the 'detail' component from a 'PwrGSD' object
DX	A utility function for forming differences
Elements	Create a subset of a "cpd.PwrGSD" object
EX1gXK	A function for computing the bias adjusted point estimate for a statistic observed to cross the efficacy boundary.
GrpSeqBnds	Computes efficacy and futility boundaries
gsd.dens	A function for computing the probability density for the group sequentially monitored test statistic.
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
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
SCtoBdry	Converts a stochastic curtailment boundary (conditional type I or II error probability) into a (efficacy or futility) boundary on the standardized Z scale
SimGSB	Verifies the results of "GrpSeqBnds" via simulation
wtdlogrank	Weighted log-rank test