lalonde: The Lalonde Datasets

#' @title NSW Data Files (Lalonde Sample)
#'
#' @description These files contain the treated and control units from the male
#' sub-sample from the National Supported Work Demonstration as used by Lalonde
#' in his paper.
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"nsw"

#' @title NSW Data Files (Dehejia-Wahha Sample)
#'
#' @description Based on pre-intervention variables, Dehejia-Wahha extract a
#' further subset of Lalonde's NSW experimental data, a subset containing
#' information on RE74 (earnings in 1974).
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"nsw_dw"

#' @title PSID controls (2490 observations)
#'
#' @description Non-experimental comparison data file constructed by Lalonde
#' from the Population Survey of Income Dynamics.
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"psid_controls"

#' @title PSID2 controls (253 observations)
#'
#' @description Further subsets created by Lalonde from the PSID non-experimental
#' comparison data file (`lalonde::psid_controls`).
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"psid_controls2"

#' @title PSID3 controls (128 observations)
#'
#' @description Further subsets created by Lalonde from the PSID non-experimental
#' comparison data file (`lalonde::psid_controls`).
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"psid_controls3"

#' @title CPS controls (15,992 observations)
#'
#' @description Non-experimental comparison data file constructed by Lalonde from
#' the Current Population Survey.
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"cps_controls"

#' @title CPS2 controls (2,369 observations)
#'
#' @description Further subsets created by Lalonde from the CPS non-experimental
#' comparison data file (`lalonde::cps_controls`).
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"cps_controls2"

#' @title CPS3 controls (429 observations)
#'
#' @description Further subsets created by Lalonde from the CPS non-experimental
#' comparison data file (`lalonde::cps_controls`).
#'
#' @source [Dehejia's NBER website.](http://users.nber.org/~rdehejia/nswdata2.html)
"cps_controls3"