Frequencies for d_4_ipf_c13_57 variable in prds_hosp10_yr2017 dataset :

    CT Scan |
    D00B184 |
      05700 |
      01300 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.08        0.08
          3 |          1        0.03        0.11
          . |      3,745       99.89      100.00
------------+-----------------------------------
      Total |      3,749      100.00

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