IncrementsRelativePartsIncrementsRelativeParts is the class for increments control based on
relative differences in intervals, with special rules for part 1 and
beginning of part 2.
IncrementsRelativeParts(dlt_start, clean_start, ...).DefaultIncrementsRelativeParts()
(count)
see slot definition.
(count)
see slot definition.
Arguments passed on to IncrementsRelative
intervals(numeric)
see slot definition.
increments(numeric)
see slot definition.
dlt_start(integer)
a scalar, the dose level increment for starting
part 2 in case of at least one DLT event in part 1.
clean_start(integer)
a scalar, the dose level increment for
starting part 2 in case of no DLTs in part 1. If clean_start <= 0,
then the part 1 ladder will be used to find the maximum next dose.
Otherwise, the relative increment rules will be applied to find the next
maximum dose level.
This class works only in conjunction with DataParts objects. If
part 2 will just be started in the next cohort, then the next maximum dose
will be either dlt_start (e.g. -1) shift of the last part 1 dose in case
of a DLT in part 1, or clean_start shift (e.g. -1) in case of no DLTs in
part 1, given that clean_start <= 0 (see description of clean_start
slot for more details). If part 1 will still be on in the next cohort,
then the next dose level will be the next higher dose level in the
part1Ladder slot of the data object. If part 2 has been started before,
the usual relative increment rules apply, see IncrementsRelative.
my_increments <- IncrementsRelativeParts(dlt_start = 0, clean_start = 1)
Run the code above in your browser using DataLab