Frequencies for prvdr_ctrl_type_cd variable in hosp_rpt2552_96_1995 dataset :

   provider |
    control |
  type code |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          1       50.00       50.00
          4 |          1       50.00      100.00
------------+-----------------------------------
      Total |          2      100.00

by Jean Roth , jroth@nber.org , 21 Apr 2018