Frequencies for first 10,000 rows of prov2000 variable in pos1994 dataset :

        610 |
histopathol |
        ogy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,798       87.98       87.98
          N |        914        9.14       97.12
          Y |        288        2.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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