Frequencies for first 10,000 rows of prov2000 variable in pos1993 dataset :

        610 |
histopathol |
        ogy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,797       87.97       87.97
          N |        913        9.13       97.10
          Y |        290        2.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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