lalonde {twang}

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." Also used as an example dataset in the MatchIt package.

Usage

data(lalonde)

Format

A data frame with 614 observations on the following 10 variables.

treat

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

age

age

educ

years of education

black

1 if black, 0 otherwise

hispan

1 if Hispanic, 0 otherwise

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

http://www.columbia.edu/~rd247/nswdata.html http://cran.r-project.org/src/contrib/Descriptions/MatchIt.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.