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

      Fatal |
  Injury at |
       work |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,195       21.95       21.95
          1 |         39        0.39       22.34
          8 |      5,744       57.44       79.78
          9 |      2,022       20.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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