Frequencies for first 10,000 rows of paytype variable in nhamcsed1998 dataset :

 primary expected |
source of payment |
   for this visit |      Freq.     Percent        Cum.
------------------+-----------------------------------
Private insurance |      3,362       33.62       33.62
         Medicare |      1,165       11.65       45.27
         Medicaid |      1,904       19.04       64.31
                4 |        255        2.55       66.86
         Self-pay |      1,739       17.39       84.25
        No charge |        119        1.19       85.44
            Other |        359        3.59       89.03
          Unknown |        946        9.46       98.49
            Blank |        151        1.51      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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