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

      Fatal |
  Injury at |
       Work |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,888       28.88       28.88
          1 |         82        0.82       29.70
          8 |      5,803       58.03       87.73
          9 |      1,227       12.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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