Frequencies for first 10,000 rows of revcaser variable in namcs2010 dataset :

 percent of patient care revenue |
                 from case rates |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
                           blank |      1,055       10.55       10.55
less than or equal to 25 percent |      8,865       88.65       99.20
                   26-50 percent |         33        0.33       99.53
                   51-75 percent |         37        0.37       99.90
            more than 75 percent |         10        0.10      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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