pgo_tte {drugdevelopR} | R Documentation |
Probability to go to phase III for multiarm programs with time-to-event outcomes
Description
Given our parameters this function calculates the probability to go to phase III after the second phase was conducted. The considered strategies are as follows:
-
Strategy: Only best promising treatment goes to phase III
Usage
pgo_tte(HRgo, n2, ec, hr1, hr2, strategy, case)
Arguments
HRgo |
threshold value for the go/no-go decision rule |
n2 |
total sample size in phase II, must be divisible by 3 |
ec |
control arm event rate for phase II and III |
hr1 |
assumed true treatment effect on HR scale for treatment 1 |
hr2 |
assumed true treatment effect on HR scale for treatment 2 |
strategy |
choose Strategy: 1 ("only best promising"), 2 ("all promising") |
case |
different cases: 1 ("nogo"), 21 (treatment 1 is promising, treatment 2 is not), 22 (treatment 2 is promising, treatment 1 is not), 31 (both treatments are promising, treatment 1 is better), 32 (both treatments are promising, treatment 2 is better) |
Value
The function pgo_tte() returns the probability to go to phase III.
Examples
res <- pgo_tte(HRgo = 0.8, n2 = 48 , ec = 0.6, hr1 = 0.7, hr2 = 0.8, strategy = 2, case = 31)