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

 percent of patient care revenue |
                   from medicaid |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           blank |        491        4.91        4.91
less than or equal to 25 percent |      7,816       78.16       83.07
                   26-50 percent |      1,232       12.32       95.39
                   51-75 percent |        392        3.92       99.31
            more than 75 percent |         69        0.69      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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