Frequencies for first 10,000 rows of cause2 variable in namcs2003 dataset :

   cause of |
  injury #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,873       98.73       98.73
       700- |          4        0.04       98.77
       710- |          1        0.01       98.78
       8490 |         33        0.33       99.11
       8493 |          4        0.04       99.15
       8494 |          7        0.07       99.22
       8495 |         57        0.57       99.79
       8496 |          5        0.05       99.84
       8497 |          1        0.01       99.85
       8498 |          1        0.01       99.86
       8781 |          1        0.01       99.87
       8784 |          1        0.01       99.88
       8789 |          1        0.01       99.89
       8792 |          1        0.01       99.90
       8810 |          1        0.01       99.91
       8846 |          1        0.01       99.92
       8859 |          1        0.01       99.93
       8889 |          2        0.02       99.95
       918- |          1        0.01       99.96
       927- |          2        0.02       99.98
       9331 |          1        0.01       99.99
       9670 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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