Frequencies for d_4_hos_c4_65 variable in prds_hosp10_yr2017 dataset :

Respiratory |
    Therapy |
    D00A184 |
      06500 |
      00400 |      Freq.     Percent        Cum.
------------+-----------------------------------
     112762 |          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