Frequencies for first 10,000 rows of prov4190 variable in posclia1999 dataset :

   prov4190 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,123       81.23       81.23
          N |      1,645       16.45       97.68
          Y |        232        2.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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