Frequencies for first 10,000 rows of revffsr variable in namcs2014 dataset :

       Percent of |
     patient care |
     revenue from |
  fee-for-service |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |      2,300       23.00       23.00
          Unknown |          3        0.03       23.03
     0-25 percent |      1,385       13.85       36.88
    26-50 percent |        757        7.57       44.45
    51-75 percent |        526        5.26       49.71
   76-100 percent |      5,029       50.29      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017