Dear all:
My code is : Y = gender#father_farmer +X. I expect the result of 1 1 ；the question is why 0 1 and 1 0 appear？

gender#father_farmer
0 1 -.0262015 .0057882 -4.53 0.000 -.037547 -.0148561
1 0 -.0303962 .005099 -5.96 0.000 -.0403908 -.0204017
1 1 -.0507688 .0060256 -8.43 0.000 -.0625795 -.0389581

ln_wealth .0184205 .0013303 13.85 0.000 .0158129 .0210281
familysize -.009443 .0015632 -6.04 0.000 -.0125069 -.0063791
ln_income .0055323 .0014149 3.91 0.000 .002759 .0083056
illnes .0020847 .0057216 0.36 0.716 -.0091301 .0132996
business -.0091095 .0056699 -1.61 0.108 -.0202231 .002004
fink .0116467 .0021251 5.48 0.000 .0074813 .015812