duration of benefits
=1 if after change in benefits
=1 if high earner
=1 if male
=1 if married
=1 if inj. required hosp. stay
industry
type of injury
age at time of injury
previous weekly wage, 1982 $
total med. costs, 1982 $
4 digit injury description
real dollar value of benefit
=1 for kentucky
=1 for michigan
log(durat)
afchnge*highearn
log(wage)
log(age)
log(totmed); = 0 if totmed < 1
=1 if head injury
=1 if neck injury
=1 if upper extremities injury
=1 if trunk injury
=1 if lower back injury
=1 if lower extremities injury
=1 if occupational disease
=1 if manufacturing industry
=1 if construction industry
highearn*lprewage