Frequencies for urpsa variable in impact1997 dataset :

Post-Reclas |
 sification |
Urban/Rural |
   Location |      Freq.     Percent        Cum.
------------+-----------------------------------
     LURBAN |      1,828       34.99       34.99
     OURBAN |      1,195       22.87       57.86
      RURAL |      2,202       42.14      100.00
------------+-----------------------------------
      Total |      5,225      100.00

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