Frequencies for first 10,000 rows of nocap variable in namcs2011 dataset :

       Type of |
       payment |
 accepted from |
 new patients: |
 Non-capitated |
       private |
     insurance |      Freq.     Percent        Cum.
---------------+-----------------------------------
         Blank |        136        1.36        1.36
       Unknown |        997        9.97       11.33
Not applicable |        583        5.83       17.16
           Yes |      7,554       75.54       92.70
            No |        730        7.30      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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