Frequencies for c_1_c7_9910 variable in prds_hosp10_yr2017 dataset :

       CORF |
    C000001 |
      09910 |
      00700 |      Freq.     Percent        Cum.
------------+-----------------------------------
    4688100 |          1        0.03        0.03
          . |      3,748       99.97      100.00
------------+-----------------------------------
      Total |      3,749      100.00

by Jean Roth , jroth@nber.org , 26 Oct 2018