Frequencies for first 10,000 rows of prov4215 variable in posclia1997 dataset :

   prov4215 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,520       95.20       95.20
          X |        480        4.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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