- lfp
Dummy variable for labor-force participation.
- hours
Wife's hours of work in 1975.
- kids5
Number of children 5 years old or younger.
- kids618
Number of children 6 to 18 years old.
- age
Wife's age.
- educ
Wife's educational attainment, in years.
- wage
Wife's average hourly earnings, in 1975 dollars.
- repwage
Wife's wage reported at the time of the 1976 interview.
- hushrs
Husband's hours worked in 1975.
- husage
Husband's age.
- huseduc
Husband's educational attainment, in years.
- huswage
Husband's wage, in 1975 dollars.
- faminc
Family income, in 1975 dollars.
- mtr
Marginal tax rate facing the wife.
- motheduc
Wife's mother's educational attainment, in years.
- fatheduc
Wife's father's educational attainment, in years.
- unem
Unemployment rate in county of residence, in percentage points.
- city
Dummy variable = 1 if live in large city, else 0.
- exper
Actual years of wife's previous labor market experience.
- nwifeinc
Non-wife income.
- wifecoll
Dummy variable for wife's college attendance.
- huscoll
Dummy variable for husband's college attendance.