Frequencies for first 10,000 rows of cause23d variable in nhamcsopd1998 dataset :

   cause of |
injury #2 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,929       99.29       99.29
        848 |          1        0.01       99.30
        849 |         51        0.51       99.81
        876 |          1        0.01       99.82
        878 |          1        0.01       99.83
        884 |          2        0.02       99.85
        885 |          2        0.02       99.87
        888 |          4        0.04       99.91
        906 |          1        0.01       99.92
        917 |          1        0.01       99.93
        919 |          1        0.01       99.94
        927 |          1        0.01       99.95
        928 |          1        0.01       99.96
        929 |          2        0.02       99.98
        947 |          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