R: Lalonde's National Supported Work Demonstration Data

lalonde {cobalt} | R Documentation

## Lalonde's National Supported Work Demonstration Data

### Description

One of the datasets used by Dehejia and Wahba in their paper "Causal Effects in Non-Experimental Studies: Reevaluating the Evaluation of Training Programs." Versions of this data set have been used as an example data set in MatchIt, twang, Matching, and CBPS. The data set `lalonde_mis` is the same but with some values missing (set to `NA`).

### Usage

    data("lalonde")
    data("lalonde_mis")

### Format

A data frame with 614 observations on the following 9 variables.

`treat`

  1 if treated in the National Supported Work Demonstration, 0 if from the Current Population Survey

`age`

  age

`educ`

  years of education

`race`

  `factor`; black, Hispanic (hispan), or white

`married`

  1 if married, 0 otherwise

`nodegree`

  1 if no degree, 0 otherwise

`re74`

  earnings in 1974 (pretreatment)

`re75`

  earnings in 1975 (pretreatment)

`re78`

  earnings in 1978 (outcome)

### Source

https://users.nber.org/~rdehejia/data/.nswdata2.html

### References

Lalonde, R. (1986). Evaluating the econometric evaluations of training programs with experimental data. American Economic Review 76: 604-620.

Dehejia, R.H. and Wahba, S. (1999). Causal Effects in Nonexperimental Studies: Re-Evaluating the Evaluation of Training Programs. Journal of the American Statistical Association 94: 1053-1062.

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