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

   FATAL AT |
       WORK |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,349       33.49       33.49
          1 |        107        1.07       34.56
          8 |      5,992       59.92       94.48
          9 |        552        5.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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