jtrain3

A data.frame with 2675 observations on 20 variables:

train: =1 if in job training

age: in years, 1977

educ: years of schooling

black: =1 if black

hisp: =1 if Hispanic

married: =1 if married

re74: '74 earnings, $1000s '82

re75: '75 earnings, $1000s '82

unem75: =1 if unem. all of '75

unem74: =1 if unem. all of '74

re78: '78 earnings, $1000s '82

agesq: age^2

trre74: train*re74

trre75: train*re75

trun74: train*unem74

trun75: train*unem75

avgre: (re74 + re75)/2

travgre: train*avgre

unem78: =1 if unem. all of '78

em78: 1 - unem78


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