Frequencies for urgeo variable in impact1997 dataset :

Pre-Reclass |
  ification |
Urban/Rural |
   Location |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,633       31.25       31.25
     OURBAN |      1,290       24.69       55.94
      RURAL |      2,302       44.06      100.00
------------+-----------------------------------
      Total |      5,225      100.00

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