1=northeast,2=midwest,3=south,4=west
age in years
=1 white nonhisp,=2 black nonhisp,=3 other race,=4 hispanic
annual family income
years of education
self rep health,1=excel,2=vgood,3=good,4=fair,5=poor
body mass index
total annual expenditures on health care
dummy variable, =1 if male