Frequencies for first 10,000 rows of cause3 variable in nhamcsed2002 dataset :

   cause of |
  injury #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,980       99.80       99.80
       700- |          8        0.08       99.88
       710- |          3        0.03       99.91
       8540 |          1        0.01       99.92
       8810 |          1        0.01       99.93
       8981 |          1        0.01       99.94
       9170 |          1        0.01       99.95
       9503 |          1        0.01       99.96
       9509 |          2        0.02       99.98
       963- |          1        0.01       99.99
       9689 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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