Frequencies for first 10,000 rows of nworkcmp variable in namcs2009 dataset :

       for new |
     patients, |
       accepts |
  workers comp |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        131        1.31        1.31
       unknown |        139        1.39        2.70
not applicable |        620        6.20        8.90
           yes |      5,385       53.85       62.75
            no |      3,725       37.25      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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