GMM objective:  15.1413
# of iterations for delta convergence:  30

df =

    0.0333
   -0.0166
  -52.3617
    0.8726
   -2.5853
   -0.3766
  -45.8495
   -0.6398
   -6.1964
    0.0713
  -11.2849
    0.6768
    0.0297

GMM objective:  15.1413
Optimization terminated: Norm of the current step is less than OPTIONS.TolX.

theta2 =

    0.3772
    1.8480
   -0.0035
    0.0810
    3.0888
   16.5980
   -0.1925
    1.4684
   -0.6590
    1.1859
    0.0296
   -1.5143
   11.6245


fval =

   14.9008


exitflag =

     2


output = 

       iterations: 6
        funcCount: 7
     cgiterations: 3
    firstorderopt: 1.2189
        algorithm: 'large-scale: trust-region Newton'
          message: 'Optimization terminated: Norm of the current step is less than OPTIONS.TolX.'

    mean       sigma      income   income^2    age    child
  
constant  
   -1.8515    0.3772    3.0888         0    1.1859         0

    0.2490    0.1269    1.1734         0    0.9784         0

price     
  -32.4374    1.8480   16.5980   -0.6590         0   11.6245

    7.3796    1.0273  163.1787    8.4747         0    5.0830

sugar     
    0.1368   -0.0035   -0.1925         0    0.0296         0

    0.2490    0.0121    0.0431         0    0.0348         0

mushy     
    0.6747    0.0810    1.4684         0   -1.5143         0

    0.0123    0.1961    0.6669         0    1.0590         0

       iterations: 6
        funcCount: 7
     cgiterations: 3
    firstorderopt: 1.2189
        algorithm: 'large-scale: trust-region Newton'
          message: 'Optimization terminated: Norm of the current step is less than OPTIONS.TolX.'

GMM objective:  14.9008
MD R-squared:  0.31558
MD weighted R-squared:  0.08633
run time (minutes):  15.865