Frequencies for first 10,000 rows of paytyper variable in namcs2008 dataset :

      recoded expected source of |
    payment - based on hierarchy |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
all sources of payment are blank |         81        0.81        0.81
                         unknown |        272        2.72        3.53
               private insurance |      5,877       58.77       62.30
                        medicare |      1,837       18.37       80.67
                        medicaid |      1,208       12.08       92.75
           worker's compensation |         64        0.64       93.39
                        self-pay |        473        4.73       98.12
                       no charge |         16        0.16       98.28
                           other |        172        1.72      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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