Frequencies for prvdr_ctrl_type_cd variable in snf_rpt2540_96_2011 dataset :

   provider |
    control |
  type code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        146        7.74        7.74
          2 |        279       14.79       22.52
          3 |          6        0.32       22.84
          4 |        994       52.68       75.52
          5 |         83        4.40       79.92
          6 |        292       15.47       95.39
          7 |          1        0.05       95.44
          8 |         14        0.74       96.18
          9 |         31        1.64       97.83
         10 |          5        0.26       98.09
         11 |          6        0.32       98.41
         12 |         18        0.95       99.36
         13 |         12        0.64      100.00
------------+-----------------------------------
      Total |      1,887      100.00

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