Frequencies for first 10,000 rows of prov2005 variable in pos1994 dataset :

 620   oral |
  pathology |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,798       87.98       87.98
          N |        966        9.66       97.64
          Y |        236        2.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017