trialCourse {interim}

Scheduling interim analyses in clinical trials

Description

Function trialCourse plots the results of function recruitment and function treatment.

Usage

trialCourse(r, t1 = NULL, t2 = NULL, lp = "topright")

Arguments

r

recruitment scenario calculated with function recruitment.

t1

optional. Treatment phase simulation from function treatment.

t2

optional. Treatment phase simulation from function treatment.

lp

optional. Position of legend, specified by keyword: "bottomright", "bottom", "bottomleft", "left", "topleft", "top", "topright", "right", or "center".

Details

Function trialCourse produces two plots to display results of enrollment and treatment simulations.

The first plot displays the cumulative number of centers that have been opened as well as the cumulative number of centers that have been closed, if applicable, per trial week.

The second plot displays the number of patients that have been screened and enrolled per trial week. If at least one of the parameters t1 and t2 are not NULL, then the number of patients finished treatment is also displayed.

It is possible to include two different treatment scenarios into one plot. This option may for example be used to assess the timing for specific interim analyses, i.e. t1 is used to assess when the required number of patients for the interim analysis finished treatment while t2 is used to assess when the required number of patients for the final analysis finished treatment.

See Also

treatment for simulating the treatment duration for a given recruitment scenario; recruitment for simulating recruitment scenarios.

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)