accrual (version 1.4)

accrual.multi.n: Prediction of Multi-center Accrual with Informative Prior in Fixed Time Frame

Description

Produce an output for prediction of the number of total participants will be recruited in a fixed time frame with Informative Prior for a multi-center trial.

Usage

accrual.multi.n(n,TT,P,J,Tm,Tsj,m,Tpred,all)

Value

For a multi-center trial, a list of prediction on the number of total participants that will be recruited in a fixed time frame with Informative Prior.

Arguments

n

Target sample size

TT

Target completion time

P

The prior certainty, range 0-1

J

The number of sites

Tm

Time to date

Tsj

The start date for each site

m

Sample observed to date for each site

Tpred

The specific time that want to predict the recruitment

all

Using all the sites (True/False)

Author

Junhao Liu, Yu Jiang, Cen Wu, Steve Simon, Matthew S. Mayo, Rama Raghavan, Byron J. Gajewski

Examples

accrual.multi.n(n=300,TT=36,P=0.5,J=10,Tm=10,Tsj=c(0,0,0,0,0,0,0,0,0,0),
m=c(9,10,10,10,11,11,11,12,12,12),Tpred=36,all=TRUE)[[1]]