Frequencies for first 10,000 rows of prov2005 variable in pos1993 dataset :

 620   oral |
  pathology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,797       87.97       87.97
          N |        968        9.68       97.65
          Y |        235        2.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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