Frequencies for first 10,000 rows of paytype variable in nhamcsed2001 dataset :

  expected source |
   of payment for |
       this visit |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |        226        2.26        2.26
Private insurance |      4,053       40.53       42.79
         Medicare |      1,276       12.76       55.55
         Medicaid |      1,643       16.43       71.98
                4 |        204        2.04       74.02
         Self-pay |      1,254       12.54       86.56
        No charge |        163        1.63       88.19
            Other |        219        2.19       90.38
          Unknown |        962        9.62      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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