Frequencies for first 10,000 rows of cause23d variable in nhamcsopd2001 dataset :

   cause of |
injury #2 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,944       99.44       99.44
        700 |         13        0.13       99.57
        710 |         19        0.19       99.76
        819 |          1        0.01       99.77
        878 |          2        0.02       99.79
        880 |          1        0.01       99.80
        885 |          2        0.02       99.82
        888 |          4        0.04       99.86
        917 |          2        0.02       99.88
        920 |          1        0.01       99.89
        927 |          3        0.03       99.92
        929 |          3        0.03       99.95
        949 |          1        0.01       99.96
        967 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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