Food Insecurity
The estimated bounds on the ATE for food insecurity assuming there were no measurement error are displayed in figure 1 for the NHANES data. The bound estimates are shown as bars, with whiskers indicating the 95% confidence intervals. One can clearly see the identifying power of the MTS and MIV assumptions in reducing the width of the interval. Maintaining these two assumptions the data show that the effect of SNAP on food insecurity is substantial, reducing food insecurity by at least 12% points and possibly by over 35% points.