Frequencies for first 10,000 rows of arthrtis variable in nhamcsopd2007 dataset :

       does |
patient now |
      have: |
  arthritis |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      8,978       89.78       89.78
        yes |      1,022       10.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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