Frequencies for first 10,000 rows of prov3610 variable in posclia1999 dataset :

   prov3610 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,624       26.24       26.24
          N |      5,770       57.70       83.94
          Y |      1,606       16.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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