Frequencies for c_1_c2_66 variable in prds_hosp10_yr2017 dataset :

   Physical |
    Therapy |
    C000001 |
      06600 |
      00200 |      Freq.     Percent        Cum.
------------+-----------------------------------
       5146 |          1        0.03        0.03
       9518 |          1        0.03        0.05
      14070 |          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