Frequencies for first 10,000 rows of cause2 variable in namcs2004 dataset :

   cause of |
  injury #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,819       98.19       98.19
       700- |          3        0.03       98.22
       710- |          6        0.06       98.28
       8490 |         41        0.41       98.69
       8493 |          3        0.03       98.72
       8494 |          3        0.03       98.75
       8495 |         84        0.84       99.59
       8496 |         15        0.15       99.74
       8497 |          4        0.04       99.78
       8498 |          2        0.02       99.80
       8641 |          1        0.01       99.81
       8792 |          1        0.01       99.82
       8839 |          1        0.01       99.83
       8849 |          1        0.01       99.84
       8859 |          2        0.02       99.86
       8888 |          1        0.01       99.87
       8889 |          1        0.01       99.88
       9173 |          1        0.01       99.89
       9179 |          1        0.01       99.90
       9262 |          3        0.03       99.93
       9269 |          2        0.02       99.95
       927- |          2        0.02       99.97
       9293 |          1        0.01       99.98
       9500 |          1        0.01       99.99
       9688 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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