Frequencies for first 10,000 rows of cause23d variable in namcs1997 dataset :

   cause of |
injury #2 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,920       99.20       99.20
        849 |         69        0.69       99.89
        888 |          3        0.03       99.92
        905 |          1        0.01       99.93
        906 |          2        0.02       99.95
        927 |          1        0.01       99.96
        928 |          1        0.01       99.97
        930 |          1        0.01       99.98
        935 |          1        0.01       99.99
        937 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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