Frequencies for prvdr_ctrl_type_cd variable in rnl_rpt265_94_2005 dataset :

   provider |
    control |
  type code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        128        3.08        3.08
         11 |          2        0.05        3.13
          2 |         36        0.87        4.00
          3 |         37        0.89        4.89
          4 |      3,410       82.13       87.02
          5 |        156        3.76       90.78
          6 |        370        8.91       99.69
          7 |          1        0.02       99.71
          8 |         11        0.26       99.98
          9 |          1        0.02      100.00
------------+-----------------------------------
      Total |      4,152      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018