Frequencies for first 10,000 rows of measpub variable in namcs2008 dataset :

           are |
   performance |
   measures on |
   physician's |
      practice |
  available to |
       public? |      Freq.     Percent        Cum.
---------------+-----------------------------------
       unknown |      1,025       10.25       10.25
not applicable |      4,797       47.97       58.22
           yes |      1,894       18.94       77.16
            no |      2,284       22.84      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016