Frequencies for first 10,000 rows of cause23d variable in nhamcsopd2000 dataset :

   cause of |
injury #2 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,983       99.83       99.83
        878 |          2        0.02       99.85
        880 |          1        0.01       99.86
        885 |          1        0.01       99.87
        886 |          1        0.01       99.88
        897 |          1        0.01       99.89
        899 |          1        0.01       99.90
        917 |          4        0.04       99.94
        920 |          2        0.02       99.96
        924 |          1        0.01       99.97
        927 |          2        0.02       99.99
        929 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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