Frequencies for s5_c2_21 variable in prds_hosp10_yr2017 dataset :

    Initial |
  Physician |
    Payment |
     Method |
      (Y/N) |
    S500000 |
      02100 |
      00200 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,722       99.28       99.28
          X |         27        0.72      100.00
------------+-----------------------------------
      Total |      3,749      100.00

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