nsw74demo R Documentation

## Labour Training Evaluation Data

### Description

This nsw74demo data frame, with 445 rows and 10 columns, is the subset of the nswdemo dataset for which 1974 earnings are available. Data are for the male experimental control and treatment groups, in an investigation of the effect of training on changes, between 1974-1975 and 1978, in the earnings of individuals who had experienced employment difficulties.

Likewise, nsw74psid1 (2675 rows) is the subset of the nswpsid1 data, and nsw74psid3 (313 rows) is the subset of the nswpsid3 data, for which 1974 income is available. NB, also, the nsw74psidA data set.

### Usage

  data(nsw74demo)
data(nsw74psid1)
data(nsw74psid3)
data(nsw74psidA)


### Format

Columns are:

trt

a numeric vector identifying the study in which the subjects were enrolled (0 = PSID, 1 = NSW).

age

age (in years).

educ

years of education.

black

(0 = not black, 1 = black).

hisp

(0 = not hispanic, 1 = hispanic).

marr

(0 = not married, 1 = married).

nodeg

(0 = completed high school, 1 = dropout).

re74

real earnings in 1974.

re75

real earnings in 1975.

re78

real earnings in 1978.

### Details

The nsw74psidA data set (252 rows) was obtained from nsw74psid1 using:

here <- age <= 40 & re74<=5000 & re75 <= 5000 & re78 < 30000

nsw74psidA <- nsw74psid1[here, ]

### Source

http://www.columbia.edu/~rd247/nswdata.html

### References

Dehejia, R.H. and Wahba, S. 1999. Causal effects in non-experimental studies: re-evaluating the evaluation of training programs. Journal of the American Statistical Association 94: 1053-1062.

Lalonde, R. 1986. Evaluating the economic evaluations of training programs. American Economic Review 76: 604-620.