trialWeek {interim}

Scheduling interim analyses in clinical trials

Description

Function trialWeek determines the week of the trial in which a certain number p of patients finished treatment.

Usage

trialWeek(t, p)

Arguments

t

result of function treatment.

p

number of patients for which the week shall be determined.

Details

trialWeek is an auxilliary function required to assess the timing of interim analyses. It derives the week of trial in which a certain number of patients finished treatment.

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

Value

The week in which the number of patients is reached.

See Also

cross for plotting results of function trialWeek into an existing Patients diagram.

Examples

x=recruitment(nc=Inf,ns=Inf,cw=4,sw=2,sf=0.3,tb=4,en=400)
y=treatment(r=x,du=26,dr=convertedRate(0.3,52,26))
z=treatment(r=x,du=52,dr=0.3)
trialCourse(r=x,t1=y,t2=z)
trialWeek(t=y,p=100)