I'm running a tobit regression to work out price elasticises and cross price elasticities for demand for alcohol. My dependent variable is expenditure share for wine on trade. When i run the regression, however

"tobit expshare_wine_on log_price_wine_on log_price_beer_on log_price_wine_off log_price_beer_off log_price_spirits_on log_price_spirits_off logincome socio_group gor_recode year sexhrp , ll(0)" it just keeps giving interaction terms for ages and i have quit the stata at the point where its on interaction term 11,000. Please can someone explain why this is happening

2) how would i then compute the price elasticises from the regression, I believe i have to use the -margins- command in some way but i'm not sure how to do this. Thank you



dataex expshare_wine_on log_price_wine_on log_price_beer_on log_price_wine_off log_price_beer_off log_price_spirits_on log_price_spirits_off logincome socio_group gor_recode year sexhrp






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Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input float(expshare_wine_on log_price_wine_on log_price_beer_on log_price_wine_off log_price_beer_off log_price_spirits_on log_price_spirits_off logincome) byte(socio_group gor_recode) int year byte sexhrp
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.422159 1 3 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745   6.40044 6 3 2012 1
 .005604915 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  7.459103 1 2 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.775366 1 3 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.113805 6 3 2012 2
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.569739 6 2 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  5.533982 6 4 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  7.579028 1 4 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.593606 3 3 2012 2
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.272487 4 2 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.609026 1 3 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.938198 3 2 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.337308 2 3 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  7.146323 2 4 2012 1
 .006608747 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  5.750647 1 4 2012 1
          0 .8500163 .20396078 -.6927273 -.7742054  .9169105 -.7325327  7.203275 1 5 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.494836 3 4 2012 2
 .013427625 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.484792 1 2 2012 1
          0 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  6.522772 6 6 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.285625 1 4 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.278839 6 2 2012 2
          0 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  5.735572 6 6 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.332039 6 3 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.243429 1 3 2012 2
  .04080451 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.020963 6 3 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.001791 1 4 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  4.970105 6 2 2012 2
  .05318476 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745   6.24026 6 3 2012 2
 .004725324 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.525675 1 4 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.715316 1 3 2012 2
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.292069 6 2 2012 1
.0021395173 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.579028 2 3 2012 1
          0 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  5.805894 1 6 2012 1
          0 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  6.336164 6 6 2012 2
 .005811018 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793   6.59858 6 2 2012 1
  .01420468 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.579028 2 3 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.272558 6 2 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  5.287823 6 4 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.228738 1 4 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.229595 3 3 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.007731 6 4 2012 2
          0 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  5.877369 6 6 2012 1
.0041208593 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745   6.54662 2 3 2012 2
   .0124029 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.966916 1 3 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.911763 3 3 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.145001 3 3 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.579028 1 3 2012 1
 .006529902 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.862258 1 4 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.800377 6 3 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.824134 1 4 2012 1
          0 .8449064  .1988509 -.6976373 -.7793153  .9118007 -.7376425  6.789703 4 7 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.928361 2 3 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.399566 6 4 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.500343 3 2 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793 4.4601445 1 2 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.617764 3 3 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.679811 6 2 2012 1
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.867948 6 4 2012 1
  .05028144 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  6.313678 3 6 2012 2
          0 .8449064  .1988509 -.6976373 -.7793153  .9118007 -.7376425  6.596409 1 7 2012 2
 .017830186 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.492455 1 4 2012 1
          0 .8731912 .22713557 -.6693525 -.7510306  .9400854 -.7093579  6.114235 3 6 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.092607 6 2 2012 1
          0 .9387252 .29266962 -.6038184 -.6854964 1.0056194 -.6438238  6.205401 3 1 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.580847 3 2 2012 1
          0 .9387252 .29266962 -.6038184 -.6854964 1.0056194 -.6438238  4.314417 1 1 2012 1
 .016797012 .8500163 .20396078 -.6927273 -.7742054  .9169105 -.7325327  6.386812 1 5 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.972129 3 3 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.175955 6 3 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.530817 6 3 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376   6.25011 1 4 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.958502 6 3 2012 1
  .02511486 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  7.579028 1 4 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.898997 1 2 2012 2
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.885359 6 2 2012 2
          0 .8500163 .20396078 -.6927273 -.7742054  .9169105 -.7325327  6.709394 6 5 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.036965 6 3 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  6.327079 1 4 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  4.998036 6 3 2012 1
          0 .9387252 .29266962 -.6038184 -.6854964 1.0056194 -.6438238  6.697083 3 1 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.011914 6 3 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.158079 1 3 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  7.176102 1 4 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.896472 6 3 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.951744 2 3 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  5.197281 3 2 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  7.545757 2 3 2012 1
          0 .9387252 .29266962 -.6038184 -.6854964 1.0056194 -.6438238  5.673536 6 1 2012 2
  .01174157 .9387252 .29266962 -.6038184 -.6854964 1.0056194 -.6438238  6.977282 1 1 2012 2
          0 .9387252 .29266962 -.6038184 -.6854964 1.0056194 -.6438238  6.517243 6 1 2012 1
 .007315162 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.570533 1 2 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.649363 6 2 2012 2
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.787118 1 2 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  7.313854 6 4 2012 1
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  6.104423 6 3 2012 2
          0 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376   5.72316 6 4 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.897319 3 3 2012 2
          0 .8621745 .21611896 -.6803692 -.7620472  .9290687 -.7203745  5.243925 6 3 2012 2
.0021459134 .8885115 .24245583 -.6540322 -.7357103  .9554057 -.6940376  7.579028 2 4 2012 1
          0 .8530697  .2070142 -.6894739  -.771152   .919964 -.7294793  6.524854 1 2 2012 1
end
label values sexhrp SexHRP
label def SexHRP 1 "Male", modify
label def SexHRP 2 "Female", modify