Frequencies for first 10,000 rows of ortho variable in nhamcsed2005 dataset :

 orthopedic |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,354       93.54       93.54
        yes |        646        6.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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