eventWeek: Scheduling interim analyses in clinical trials in a...
In interim: Scheduling Interim Analyses in Clinical Trials

Description Usage Arguments Details Value See Also Examples

Function eventWeek determines the week of the trial in which a certain number t of events occured.

1	eventWeek(t, p)

`t`	result of function `event`.
`p`	number of events for which the week shall be determined.

eventWeek is an auxilliary function required to assess the timing of interim analyses. It derives the week of trial in which a certain number of events occured.

The output is required for function cross, which includes the information into an existing Event diagram.

The week in which the number of events is reached.

cross for plotting results of function eventWeek into an existing Event diagram.

x=recruitment(nc=Inf,ns=Inf,cw=4,sw=2,sf=0.3,tb=4,en=400)
x=recruitment(nc=Inf,ns=Inf,cw=4,sw=2,sf=0.3,tb=4,en=400)
y=treatment(r=x,dr=0.08,du=50)
eventCourse(r=x,e1=y)
trialWeek(t=y,p=50)