Frequencies for first 10,000 rows of cause23d variable in nhamcsopd1999 dataset :

   cause of |
injury #2 - |
      broad |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,986       99.86       99.86
        819 |          1        0.01       99.87
        885 |          3        0.03       99.90
        906 |          1        0.01       99.91
        926 |          1        0.01       99.92
        927 |          1        0.01       99.93
        928 |          1        0.01       99.94
        935 |          1        0.01       99.95
        947 |          1        0.01       99.96
        960 |          1        0.01       99.97
        967 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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