Frequencies for first 10,000 rows of revcaser variable in namcs2014 dataset :

       Percent of |
     patient care |
revenue from case |
            rates |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |      2,300       23.00       23.00
          Unknown |          3        0.03       23.03
     0-25 percent |      7,417       74.17       97.20
    26-50 percent |        120        1.20       98.40
    51-75 percent |         41        0.41       98.81
   76-100 percent |        119        1.19      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017