get_group: get_group

In BMisc: Miscellaneous Functions for Panel Data, Quantiles, and Printing Results

get_group

Description

A function to calculate a unit's group in a panel data setting with a binary treatment and staggered treatment adoption and where there is a column in the data indicating whether or not a unit is treated

Usage

get_group(df, idname, tname, treatname)

Arguments

df	the data.frame used in the function
idname	name of column that holds the unit id
tname	name of column that holds the time period
treatname	name of column with the treatment indicator

Examples

n <- 50
id <- rep(seq_len(n), each = 4)
t <- rep(1:4, n)
g <- rep(sample(c(0, 2, 3), n, replace = TRUE), each = 4)
treat <- as.integer(t >= g & g > 0)
dta <- data.frame(id = id, t = t, treat = treat)
dta$group <- get_group(dta, idname = "id", tname = "t", treatname = "treat")
head(unique(dta[, c("id", "group")]))

BMisc documentation built on Aug. 22, 2026, 5:07 p.m.