Frequencies for first 10,000 rows of revffsr variable in namcs2012 dataset :

       Percent of |
     patient care |
     revenue from |
  fee-for-service |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |      2,069       20.69       20.69
     0-25 percent |      1,954       19.54       40.23
    26-50 percent |        788        7.88       48.11
    51-75 percent |        895        8.95       57.06
   76-100 percent |      4,294       42.94      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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