Frequencies for first 10,000 rows of cause23d variable in namcs1999 dataset :

   cause of |
injury #2 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,975       99.75       99.75
        819 |          1        0.01       99.76
        878 |          2        0.02       99.78
        879 |          1        0.01       99.79
        884 |          1        0.01       99.80
        888 |          3        0.03       99.83
        904 |          2        0.02       99.85
        914 |          1        0.01       99.86
        919 |          1        0.01       99.87
        926 |          2        0.02       99.89
        967 |          8        0.08       99.97
        968 |          2        0.02       99.99
        985 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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