Frequencies for first 10,000 rows of cause33d variable in nhamcsed2008 dataset :

   cause of |
injury #3 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,967       99.67       99.67
        700 |          6        0.06       99.73
        710 |         13        0.13       99.86
        849 |          7        0.07       99.93
        853 |          1        0.01       99.94
        854 |          2        0.02       99.96
        855 |          1        0.01       99.97
        936 |          1        0.01       99.98
        950 |          1        0.01       99.99
        967 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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