Frequencies for provtype variable in impact1994 dataset :

   Provider |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,027       74.49       74.49
          1 |        622       11.51       86.00
          7 |        197        3.64       89.64
          8 |         48        0.89       90.53
         11 |         49        0.91       91.44
         12 |          1        0.02       91.45
         14 |        460        8.51       99.96
         15 |          2        0.04      100.00
------------+-----------------------------------
      Total |      5,406      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016