Frequencies for prvdr_ctrl_type_cd variable in rnl_rpt265_94_2011 dataset :

   provider |
    control |
  type code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          6       31.58       31.58
          2 |          1        5.26       36.84
          3 |          1        5.26       42.11
          4 |          4       21.05       63.16
          5 |          3       15.79       78.95
          6 |          4       21.05      100.00
------------+-----------------------------------
      Total |         19      100.00

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