Checks if data satisfies criteria to be used in internal ptetools functions

function to take in a data.frame, check if it has the right columns to be used to calculate a group-time average treatment effect, and sets the class of the data.frame to include gt_data_frame

Usage

gt_data_frame(data)

Arguments

data

data that will be checked to see if has right format for computing group-time average treatment effects

Value

gt_data_frame object