Frequencies for first 10,000 rows of cause33d variable in nhamcsed2009 dataset :

   cause of |
injury #3 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,954       99.54       99.54
        700 |         10        0.10       99.64
        710 |          5        0.05       99.69
        849 |         20        0.20       99.89
        878 |          1        0.01       99.90
        888 |          1        0.01       99.91
        906 |          2        0.02       99.93
        910 |          1        0.01       99.94
        920 |          1        0.01       99.95
        942 |          1        0.01       99.96
        950 |          2        0.02       99.98
        967 |          1        0.01       99.99
        968 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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