Frequencies for first 10,000 rows of paytype variable in nhamcsed2002 dataset :

  expected source |
   of payment for |
       this visit |      Freq.     Percent        Cum.
------------------+-----------------------------------
            Blank |        182        1.82        1.82
Private insurance |      3,711       37.11       38.93
         Medicare |      1,255       12.55       51.48
         Medicaid |      1,950       19.50       70.98
                4 |        164        1.64       72.62
         Self-pay |      1,184       11.84       84.46
        No charge |        249        2.49       86.95
            Other |        359        3.59       90.54
          Unknown |        946        9.46      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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