Frequencies for first 10,000 rows of prov3610 variable in posclia2003 dataset :

   prov3610 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,158       41.58       41.58
          N |      4,715       47.15       88.73
          Y |      1,127       11.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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