Frequencies for first 10,000 rows of cause2 variable in namcs1995 dataset :

   cause of |
  injury #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,989       99.89       99.89
       8389 |          1        0.01       99.90
       9179 |          4        0.04       99.94
       9208 |          1        0.01       99.95
       927- |          2        0.02       99.97
       9313 |          1        0.01       99.98
       9479 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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