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

      Fatal |
  Injury at |
       Work |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,441       34.41       34.41
          1 |        102        1.02       35.43
          8 |      5,925       59.25       94.68
          9 |        532        5.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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