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

      fatal |
  injury at |
       work |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,011       30.11       30.11
          1 |         76        0.76       30.87
          8 |      5,735       57.35       88.22
          9 |      1,178       11.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016