Frequencies for first 10,000 rows of prov4175 variable in posclia2001 dataset :

   prov4175 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,593       25.93       25.93
          N |      6,950       69.50       95.43
          Y |        457        4.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016