Earnings1978 {QDComparison}

LaLonde's 1978 Earnings Data

Description

These data come from LaLonde's (1986) National Supported Work Demonstration (NSW) Data (Dehejia-Wahha Sample (1999)), used by Firpo (2007).

Usage

data(Earnings1978)

Format

A data frame with 445 observations on the following 2 variables.

x

A binary indicator variable: 0 for control, 1 for intervention (received job training)

y

The response variable: earnings in 1978

Source

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

References

Dehejia, R. H. and Wahba, S. (1999), "Causal effects in nonexperimental studies: Reevaluating the evaluation of training programs," Journal of the American Statistical Association, 94, 1053-1062.

Firpo, S. (2007), "Efficient semiparametric estimation of quantile treatment effects," Econometrica, 75, 259-276.

LaLonde, R. J. (1986), "Evaluating the econometric evaluations of training programs with experimental data," The American Economic Review, 604-620.

Examples

data(Earnings1978)
## maybe str(Earnings1978)
y <- Earnings1978[,2]
x <- Earnings1978[,1]
hist(y[x==1])