Frequencies for first 10,000 rows of paytype variable in nhamcsopd2000 dataset :

 primary expected |
source of payment |
   for this visit |      Freq.     Percent        Cum.
------------------+-----------------------------------
Private insurance |      3,009       30.09       30.09
         Medicare |      1,615       16.15       46.24
         Medicaid |      2,663       26.63       72.87
                4 |        108        1.08       73.95
         Self-pay |      1,062       10.62       84.57
        No charge |         74        0.74       85.31
            Other |        808        8.08       93.39
          Unknown |        608        6.08       99.47
            Blank |         53        0.53      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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