Frequencies for urspa variable in impact2011 dataset :

   Urban or |
      Rural |
designation |
   based on |
    payment |
       CBSA |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,439       40.52       40.52
     OURBAN |      1,153       32.47       72.99
      RURAL |        959       27.01      100.00
------------+-----------------------------------
      Total |      3,551      100.00

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