Frequencies for first 10,000 rows of work_inj variable in person dataset :

      Fatal |
  Injury at |
       Work |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,472       34.72       34.72
          1 |        105        1.05       35.77
          8 |      5,940       59.40       95.17
          9 |        483        4.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016