randomization function

Randomization allocation

Implements a randomization allocation for control and treatment arms with different randomization ratios and block sizes.

randomization(N_total, block = 2, allocation = c(1, 1))

Arguments

• N_total: an integer value of total sample size for randomization allocation.
• block: a vector value of the block size for randomization. Note that it needs to be a multiple of the sum of allocation.
• allocation: a numeric vector of the randomization allocation in the order c(control, treatment).

Returns

the randomization allocation with 0, 1 for control and treatment

Examples

# Implementing treatment allocation for control to treatment with 1:1.5 randomization ratio
randomization(N_total = 100, block = 5, allocation = c(2, 3))

# Treatment allocation with 2:1 for control to treatment
randomization(N_total = 70, block = 9, allocation = c(2, 1))

# Treatment allocation for control to treatment with 1:2 for control to treatment with
# multiple block sizes c(3, 9, 6)
randomization(N_total = 100, block = c(3, 9, 6), allocation = c(1, 2))

# For complete randomization set the N_total to block size
randomization(N_total = 100, block = 100, allocation = c(1, 1))