Frequencies for first 10,000 rows of prov2000 variable in pos1995 dataset :

        610 |
histopathol |
        ogy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,884       88.84       88.84
          N |        847        8.47       97.31
          Y |        269        2.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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