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

      other |
  source of |
    payment |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,773       97.73       97.73
        yes |        227        2.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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