Frequencies for first 10,000 rows of revdiscr variable in namcs2009 dataset :

 percent of patient care revenue |
 from discounted fee-for-service |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           blank |        912        9.12        9.12
less than or equal to 25 percent |      6,721       67.21       76.33
                   26-50 percent |        605        6.05       82.38
                   51-75 percent |        535        5.35       87.73
            more than 75 percent |      1,227       12.27      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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