trtAssign: Assign treatment

In simstudy: Simulation of Study Data

Assign treatment

Description

Assign treatment

Usage

trtAssign(
  dtName,
  nTrt = 2,
  balanced = TRUE,
  strata = NULL,
  grpName = "trtGrp",
  ratio = NULL
)

Arguments

dtName	data table
nTrt	number of treatment groups
balanced	indicator for treatment assignment process
strata	vector of strings representing stratifying variables
grpName	string representing variable name for treatment or exposure group
ratio	vector of values indicating relative proportion of group assignment

Value

An integer (group) ranging from 1 to length of the probability vector

See Also

trtObserve

Examples

dt <- genData(15)

dt1 <- trtAssign(dt, nTrt = 3, balanced = TRUE)
dt1[, .N, keyby = trtGrp]

dt2 <- trtAssign(dt, nTrt = 3, balanced = FALSE)
dt2[, .N, keyby = trtGrp]

def <- defData(varname = "male", formula = .4, dist = "binary")
dt <- genData(1000, def)
dt

dt3 <- trtAssign(dt, nTrt = 5, strata = "male", balanced = TRUE, grpName = "Group")
dt3
dt3[, .N, keyby = .(male, Group)]
dt3[, .N, keyby = .(Group)]

dt4 <- trtAssign(dt, nTrt = 5, strata = "male", balanced = FALSE, grpName = "Group")
dt4[, .N, keyby = .(male, Group)]
dt4[, .N, keyby = .(Group)]

dt5 <- trtAssign(dt, nTrt = 5, balanced = TRUE, grpName = "Group")
dt5[, .N, keyby = .(male, Group)]
dt5[, .N, keyby = .(Group)]

dt6 <- trtAssign(dt, nTrt = 3, ratio = c(1, 2, 2), grpName = "Group")
dt6[, .N, keyby = .(Group)]

simstudy documentation built on Nov. 23, 2023, 1:06 a.m.