husband's age
=1 if hus. in union
hus. weekly earns
husband's yrs schooling
=1 if hus. black
=1 if hus. hispanic
hus. weekly hours
=1 if have child >= 6
wife's weekly earnings
wife's age
=1 if wife black
wife's yrs schooling
=1 if wife hispanic
=1 if wife in union
annual family income
huseduc - husage - 6
age - educ - 6
=1 if have child < 6
wife's weekly hours
exper^2
non-wife inc, $1000s
=1 if wife in labor force
earns/hours
log(hrwage)