Frequencies for s5_c2_21 variable in hcris2552_10_2010 dataset :

    initial |
  physician |
    payment |
     method |
      (y/n) |
    s500000 |
02100 00200 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,296       98.88       98.88
          X |         26        1.12      100.00
------------+-----------------------------------
      Total |      2,322      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018