Frequencies for first 10,000 rows of paytyper variable in nhamcsed2011 dataset :

 Recoded expected primary source |
 of payment (based on hierarchy) |      Freq.     Percent        Cum.
---------------------------------+-----------------------------------
All sources of payment are blank |        178        1.78        1.78
                         Unknown |        451        4.51        6.29
               Private insurance |      2,952       29.52       35.81
                        Medicare |      1,903       19.03       54.84
                Medicaid or CHIP |      3,007       30.07       84.91
           Worker's compensation |        108        1.08       85.99
                        Self-pay |      1,140       11.40       97.39
               No charge/Charity |         62        0.62       98.01
                           Other |        199        1.99      100.00
---------------------------------+-----------------------------------
                           Total |     10,000      100.00

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