bisec: Bisection algorithm in Beta distribution

In zhangyuwinnie/RPEXE.RPEXT: This reduced piecewise exponential survival software implements the likelihood ratio test procedure in Han, Schell, and Kim (2009)

Description

Running bisection algorithm to search for a2, the minimizer of (log((a2)^dea1*(1-a2)^dea2-delta))^2

Usage

bisec(delta, dea1, dea2, upbd, lowbd)

Arguments

delta	Test statistic in Han et al. (2012), delta = (ttot1/(ttot1+ttot2))^dea1*(ttot2/(ttot1+ttot2))^dea2;
dea1	first parameter in Beta distribution (number of events from the first arm)
dea2	second parameter in Beta distribution (number of events from the second arm)
upbd	upper bound of a2
lowbd	lower bound of a2

Value

a2

Examples

bisec(-74.4824, 33, 98, 1, 0.252)

zhangyuwinnie/RPEXE.RPEXT documentation built on May 4, 2019, 10:17 p.m.