Frequencies for first 10,000 rows of revothr variable in namcs2008 dataset :

 percent of patient care revenue |
   from other methods of payment |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           blank |      1,131       11.31       11.31
less than or equal to 25 percent |      8,603       86.03       97.34
                   26-50 percent |        162        1.62       98.96
            more than 75 percent |        104        1.04      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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