Frequencies for first 10,000 rows of nworkcmp variable in namcs2010 dataset :

       for new |
     patients, |
       accepts |
  workers comp |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |         66        0.66        0.66
       unknown |        470        4.70        5.36
not applicable |        722        7.22       12.58
           yes |      4,994       49.94       62.52
            no |      3,748       37.48      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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