Frequencies for first 10,000 rows of typepay variable in namcs1995 dataset :

     expected type of payment for visit |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
No answer, both parts a and b were blan |        132        1.32        1.32
              Preferred Provider Option |        873        8.73       10.05
               Insured, fee-for-service |      3,703       37.03       47.08
                      HMO/Other prepaid |      2,187       21.87       68.95
                               Self-pay |      1,113       11.13       80.08
                              No charge |         69        0.69       80.77
                                  Other |        127        1.27       82.04
Type of payment unspec, but insurance c |      1,796       17.96      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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