Frequencies for d_4_ipf_c13_66 variable in prds_hosp10_yr2017 dataset :

   Physical |
    Therapy |
    D00B184 |
      06600 |
      01300 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          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