interim (version 0.8.0)

convertedRate: Scheduling interim analyses in clinical trials

Description

Function convertedRate converts a drop-out rate from one period to another. If the drop-out rate is defined for w1 weeks convertedRate yields the drop-out rate for w2 weeks.

Usage

convertedRate(r, w1, w2)

Arguments

r

rate between 0 and 1 (0 < r < 1)

w1

number of weeks for which r is defined

w2

number of weeks to which the rate shall be converted

Value

The converted drop-out rate.

Details

convertedRate is an auxilliary function that converts drop-out rates for different time periods.

The function can be used in order to convert drop-out rates required for function treatment. Function treatment requires the drop-out rate for the respective treatment duration as input. Typically known annual drop-out rates can be converted to the respective rate for the treatment duration accordingly by setting w1 to 52 and w2 to the respective treatment duration.

See Also

treatment for simulating the treatment duration for a given recruitment scenario

Examples

Run this code
# NOT RUN {
convertedRate(r=0.3,w1=52,w2=26)
# }

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