Frequencies for first 10,000 rows of wound variable in nhamcsopd2010 dataset :

 wound care |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,144       91.44       91.44
        yes |        856        8.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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