empty_data <- Data(doseGrid = c(1, 3, 5, 10, 15, 20, 25, 40, 50, 80, 100))
# Initialize the CRM model.
my_model <- LogisticLogNormal(
mean = c(-0.85, 1),
cov = matrix(c(1, -0.5, -0.5, 1), nrow = 2),
ref_dose = 56
)
# Choose the rule for selecting the next dose.
my_next_best <- NextBestNCRM(
target = c(0.2, 0.35),
overdose = c(0.35, 1),
max_overdose_prob = 0.25
)
# Choose the rule for the cohort-size.
my_size1 <- CohortSizeRange(
intervals = c(0, 30),
cohort_size = c(1, 3)
)
my_size2 <- CohortSizeDLT(
intervals = c(0, 1),
cohort_size = c(1, 3)
)
my_size <- maxSize(my_size1, my_size2)
# Choose the rule for stopping.
my_stopping1 <- StoppingMinCohorts(nCohorts = 3)
my_stopping2 <- StoppingTargetProb(
target = c(0.2, 0.35),
prob = 0.5
)
my_stopping3 <- StoppingMinPatients(nPatients = 20)
my_stopping <- (my_stopping1 & my_stopping2) | my_stopping3
# Choose the rule for dose increments.
my_increments <- IncrementsRelative(
intervals = c(0, 20),
increments = c(1, 0.33)
)
# Initialize the design.
design <- Design(
model = my_model,
nextBest = my_next_best,
stopping = my_stopping,
increments = my_increments,
cohort_size = my_size,
data = empty_data,
startingDose = 3
)
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