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

 percent of patient care revenue |
                 from capitation |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           blank |      1,442       14.42       14.42
less than or equal to 25 percent |      7,783       77.83       92.25
                   26-50 percent |        641        6.41       98.66
                   51-75 percent |         81        0.81       99.47
            more than 75 percent |         53        0.53      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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