Frequencies for urspa variable in impact2007 dataset :

   Urban or |
      Rural |
designation |
   based on |
    payment |
       CBSA |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,483       40.33       40.33
     OURBAN |      1,165       31.68       72.02
      RURAL |      1,029       27.98      100.00
------------+-----------------------------------
      Total |      3,677      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016