A non-experimental "control" group, used in various studies of
the effect of a labor training program, alternative to the
experimental control group in nswdemo.
Usage
cps1
cps2
cps3
Format
This data frame contains the following columns:
trt
a numeric vector
identifying the study in which the subjects were enrolled
(0 = Control, 1 = treated).
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 cps1 and psid1 data sets are two non-experimental
"control" groups, alternative to that in nswdemo, used in
investigating whether use of such a non-experimental control group can
be satisfactory. cps2 and cps3 are subsets of cps1,
designed to be better matched to the experimental data than cps1.
Similary psid2 and psid3 are subsets of psid1,
designed to be better matched to the experimental data than
psid1.
Source
http://www.nber.org/~rdehejia/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.
Smith, J. A. and Todd, P.E. 2005,"Does Matching overcome LaLonde's
critique of nonexperimental estimators", Journal of
Econometrics 125: 305-353.
Dehejia, R.H. 2005. Practical propensity score matching: a reply to
Smith and Todd. Journal of Econometrics 125: 355-364.