Frequencies for first 10,000 rows of eniflag_4 variable in linkco1991us_num dataset :

  Nature of |
Injury Flag |
          4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,175       21.75       21.75
          1 |         70        0.70       22.45
          . |      7,755       77.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015