Frequencies for first 10,000 rows of cause3r variable in nhamcsopd2004 dataset :

   cause of |
injury #3 - |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,996       99.96       99.96
       8493 |          1        0.01       99.97
       8495 |          2        0.02       99.99
       9408 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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