Frequencies for first 10,000 rows of cause3r variable in nhamcsed1997 dataset :

   cause of |
injury #3 - |
    numeric |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,982       99.82       99.82
       8490 |          3        0.03       99.85
       8493 |          3        0.03       99.88
       8494 |          1        0.01       99.89
       8495 |          1        0.01       99.90
       8496 |          7        0.07       99.97
       8880 |          1        0.01       99.98
       9509 |          1        0.01       99.99
       9675 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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