Frequencies for first 10,000 rows of cause3 variable in nhamcsed1992 dataset :

   Cause of |
  injury #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
      80000 |      9,995       99.95       99.95
      88490 |          1        0.01       99.96
      88498 |          1        0.01       99.97
      88798 |          1        0.01       99.98
      89688 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016