Frequencies for first 10,000 rows of prmaidr variable in namcs2011 dataset :

 Percent of patient care revenue |
                   from Medicaid |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           Blank |        687        6.87        6.87
Less than or equal to 25 percent |      7,066       70.66       77.53
                   26-50 percent |      1,317       13.17       90.70
                   51-75 percent |        601        6.01       96.71
            More than 75 percent |        329        3.29      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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