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

  Type of payment |
       accepted - |
private insurance |
    (capitated or |
   non-capitated) |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |        757        7.57        7.57
   Not applicable |        327        3.27       10.84
              Yes |      8,090       80.90       91.74
               No |        826        8.26      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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