Frequencies for d_4_ipf_c11_55 variable in prds_hosp10_yr2017 dataset :

Radiology-T |
 herapeutic |
    D00B184 |
      05500 |
      01100 |      Freq.     Percent        Cum.
------------+-----------------------------------
          3 |          2        0.05        0.05
         27 |          1        0.03        0.08
          . |      3,746       99.92      100.00
------------+-----------------------------------
      Total |      3,749      100.00

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