Frequencies for first 10,000 rows of wound variable in nhamcsopd2006 dataset :

 wound care |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,367       93.67       93.67
        Yes |        633        6.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016