Frequencies for first 10,000 rows of prov4175 variable in posclia1998 dataset :

   prov4175 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,776       17.76       17.76
          N |      7,729       77.29       95.05
          Y |        495        4.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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