Frequencies for urspa variable in impact2002 dataset :

   Urban or |
      Rural |
designation |
   based on |
    payment |
       CBSA |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,668       34.14       34.14
     OURBAN |      1,118       22.88       57.02
      RURAL |      2,100       42.98      100.00
------------+-----------------------------------
      Total |      4,886      100.00

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