Frequencies for first 10,000 rows of prpatr variable in namcs2013 dataset :

       Percent of |
  patient revenue |
     from patient |
         payments |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |      1,085       10.85       10.85
     0-25 percent |      8,498       84.98       95.83
    26-50 percent |        197        1.97       97.80
    51-75 percent |         17        0.17       97.97
   76-100 percent |        203        2.03      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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