Frequencies for first 10,000 rows of paytype variable in namcs2004 dataset :

 primary expected |
source of payment |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |        117        1.17        1.17
Private insurance |      5,303       53.03       54.20
         Medicare |      2,567       25.67       79.87
         Medicaid |        902        9.02       88.89
                4 |        138        1.38       90.27
         Self-pay |        554        5.54       95.81
        No charge |         69        0.69       96.50
            Other |        182        1.82       98.32
          Unknown |        168        1.68      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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