randolist contains home-grown functions for creating randomisation
lists in R.
You can install the development version of randolist from github with:
remotes::install_github("CTU-Bern/randolist")Load the package
library(randolist)Where no strata are defined, the blockrand function can be used to
create a randomization list.
blockrand(n = 10,
blocksizes = 1:2)
#> seq_in_list block blocksize seq_in_block arm
#> 1 1 1 4 1 A
#> 2 2 1 4 2 A
#> 3 3 1 4 3 B
#> 4 4 1 4 4 B
#> 5 5 2 2 1 A
#> 6 6 2 2 2 B
#> 7 7 3 4 1 B
#> 8 8 3 4 2 A
#> 9 9 3 4 3 B
#> 10 10 3 4 4 AThe treatment label is set via the arms argument.
Block sizes are defined via the blocksizes argument. The above example
creates a randomization list with blocks of 1 or 2 of each arm (so in
practice, the block sizes are 2 and 4).
Allocation schemes beyond 1:1 randomization are possible by specifying
the arms argument, specifically by using the same arm label multiple
times.
blockrand(n = 10,
blocksizes = 1:2,
arms = c("A", "A", "B"))
#> seq_in_list block blocksize seq_in_block arm
#> 1 1 1 6 1 A
#> 2 2 1 6 2 B
#> 3 3 1 6 3 A
#> 4 4 1 6 4 B
#> 5 5 1 6 5 A
#> 6 6 1 6 6 A
#> 7 7 2 6 1 A
#> 8 8 2 6 2 B
#> 9 9 2 6 3 A
#> 10 10 2 6 4 B
#> 11 11 2 6 5 A
#> 12 12 2 6 6 A