Frequencies for first 10,000 rows of prov4175 variable in posclia1997 dataset :

   prov4175 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,519       15.19       15.19
          N |      7,972       79.72       94.91
          Y |        509        5.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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