Frequencies for first 10,000 rows of incdrain variable in nhamcsed2014 dataset :

   Incision |
        and |
drainage (I |
       & D) |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,910       99.10       99.10
        Yes |         90        0.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017