Frequencies for urspa variable in impact2010 dataset :

   Urban or |
      Rural |
designation |
   based on |
    payment |
       CBSA |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,457       40.52       40.52
     OURBAN |      1,177       32.73       73.25
      RURAL |        962       26.75      100.00
------------+-----------------------------------
      Total |      3,596      100.00

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