Frequencies for urspa variable in impact2012 dataset :

   Urban or |
      Rural |
designation |
   based on |
    payment |
       CBSA |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,419       40.53       40.53
     OURBAN |      1,141       32.59       73.12
      RURAL |        941       26.88      100.00
------------+-----------------------------------
      Total |      3,501      100.00

by Jean Roth , jroth@nber.org , 16 Dec 2016