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

       Percent of |
  patient revenue |
       from other |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |      1,030       10.30       10.30
     0-25 percent |      8,603       86.03       96.33
    26-50 percent |        227        2.27       98.60
    51-75 percent |         20        0.20       98.80
   76-100 percent |        120        1.20      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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