mean       sigma      income   income^2    age    child
  
constant  
   -1.8409    0.3772    3.0888         0    1.1859         0

    0.2579    0.1294    1.2132         0    1.0158         0

price     
  -32.4333    1.8480   16.5980   -0.6590         0   11.6245

    7.7425    1.0745  172.3338    8.9552         0    5.2068

sugar     
    0.1427   -0.0035   -0.1925         0    0.0296         0

    0.2579    0.0123    0.0454         0    0.0363         0

mushy     
    0.7882    0.0810    1.4684         0   -1.5143         0

    0.0129    0.2052    0.6971         0    1.1029         0

GMM objective:  14.9008
MD R-squared:  0.27919
MD weighted R-squared:  0.094449
# of objective function evaluations:  52
run time (minutes):  4.9253