Frequencies for first 10,000 rows of exciprov variable in namcs2014 dataset :

   Excision of |
        tissue |
      provided |      Freq.     Percent        Cum.
---------------+-----------------------------------
         Blank |         85        0.85        0.85
Not applicable |      9,858       98.58       99.43
           Yes |         45        0.45       99.88
            No |         12        0.12      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017