Frequencies for first 10,000 rows of nselfpay variable in namcs2012 dataset :

 Type of payments |
accepted from new |
        patients: |
         Self-pay |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |        251        2.51        2.51
   Not applicable |        327        3.27        5.78
              Yes |      9,212       92.12       97.90
               No |        210        2.10      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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