Frequencies for first 10,000 rows of prov4190 variable in posclia1998 dataset :

   prov4190 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,115       81.15       81.15
          N |      1,651       16.51       97.66
          Y |        234        2.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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