keep_all_pretreatment_subset: Keep All Pre-Treatment Subset

In ptetools: Panel Treatment Effects Tools

Keep All Pre-Treatment Subset

Description

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).

Usage

keep_all_pretreatment_subset(data, g, tp, ...)

Arguments

data	the full dataset
g	the current group
tp	the current time period
...	additional arguments

Value

list that contains the following elements:

• gt_data: a gt_data_frame object that contains the correct subset of data

• n1: the number of observations in this subset

• disidx: a vector of the correct ids for this subset

ptetools documentation built on April 12, 2025, 1:28 a.m.