Frequencies for first 10,000 rows of cause3 variable in nhamcsed2008 dataset :

   cause of |
  injury #3 |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,967       99.67       99.67
       700- |          6        0.06       99.73
       710- |         13        0.13       99.86
       8490 |          6        0.06       99.92
       8494 |          1        0.01       99.93
       8532 |          1        0.01       99.94
       8542 |          1        0.01       99.95
       8543 |          1        0.01       99.96
       8555 |          1        0.01       99.97
       9361 |          1        0.01       99.98
       9505 |          1        0.01       99.99
       9673 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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