View source: R/subset_functions.R
keep_all_pretreatment_subset | R Documentation |
A function that takes an original data set and keeps all
data for all groups that are not-yet-treated by period tp
as well
as for group g
.
In particular, this keeps more data than functions like two_by_two
subset that use a fixed base period.
A main use case for this function is the interactive fixed effects approach proposed in Callaway and Tsyawo (2023).
keep_all_pretreatment_subset(data, g, tp, ...)
data |
a data frame |
g |
group |
tp |
time period |
all data but in correct format for computing ATT(g,t)
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