Frequencies for first 10,000 rows of prov3610 variable in posclia1998 dataset :

   prov3610 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,241       22.41       22.41
          N |      6,138       61.38       83.79
          Y |      1,621       16.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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