Frequencies for first 10,000 rows of payoth variable in nhamcsopd2009 dataset :

   expected |
  source of |
   payment: |
      other |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,698       96.98       96.98
        yes |        302        3.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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