Frequencies for first 10,000 rows of prov3610 variable in posclia2001 dataset :

   prov3610 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,426       34.26       34.26
          N |      5,137       51.37       85.63
          Y |      1,437       14.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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