Frequencies for first 10,000 rows of cause2 variable in nhamcsopd2001 dataset :

   cause of |
  injury #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,944       99.44       99.44
       700- |         13        0.13       99.57
       710- |         19        0.19       99.76
       8199 |          1        0.01       99.77
       8781 |          1        0.01       99.78
       8788 |          1        0.01       99.79
       8809 |          1        0.01       99.80
       8859 |          2        0.02       99.82
       888- |          4        0.04       99.86
       9179 |          2        0.02       99.88
       9208 |          1        0.01       99.89
       927- |          3        0.03       99.92
       9290 |          2        0.02       99.94
       9298 |          1        0.01       99.95
       9491 |          1        0.01       99.96
       9671 |          2        0.02       99.98
       9674 |          1        0.01       99.99
       9679 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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