Frequencies for first 10,000 rows of nworkcmp variable in namcs2007 dataset :

       for new |
     patients, |
       accepts |
  workers comp |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        176        1.76        1.76
       unknown |        251        2.51        4.27
not applicable |        659        6.59       10.86
           yes |      5,432       54.32       65.18
            no |      3,482       34.82      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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