age in years
=1 if white, 2=black, 3=other, 4=hispanic
self reported health status
died within 5 years of survey
dummt variable, =1 if married
=1 if <hs, 2 if hs, 3 if some college, 4 if college
=1 if <$10K, 2=$20-20K, 3=$20-30K, 4=$40-40K, 5=$40-50k, 6>$50K
=1 if male, 09 otherwise
body mass index