Frequencies for first 10,000 rows of revdiscr variable in namcs2007 dataset :

 percent of patient care revenue |
 from discounted fee-for-service |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           blank |      1,449       14.49       14.49
less than or equal to 25 percent |      6,317       63.17       77.66
                   26-50 percent |        720        7.20       84.86
                   51-75 percent |        444        4.44       89.30
            more than 75 percent |      1,070       10.70      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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