Frequencies for first 10,000 rows of paytyper variable in nhamcsed2008 dataset :

       recoded primary source of |
    payment - based on hierarchy |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
all sources of payment are blank |        112        1.12        1.12
                         unknown |        284        2.84        3.96
               private insurance |      3,489       34.89       38.85
                        medicare |      2,002       20.02       58.87
                        medicaid |      2,179       21.79       80.66
           worker's compensation |        128        1.28       81.94
                        self-pay |      1,486       14.86       96.80
                       no charge |         50        0.50       97.30
                           other |        270        2.70      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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