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

 Type of payments |
accepted from new |
         patienNo |
   Charge/Charity |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |        595        5.95        5.95
   Not applicable |        465        4.65       10.60
Refused to answer |         56        0.56       11.16
              Yes |      4,205       42.05       53.21
               No |      4,679       46.79      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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