Frequencies for first 10,000 rows of cause2 variable in nhamcsopd2002 dataset :

   cause of |
  injury #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      9,939       99.39       99.39
       700- |         34        0.34       99.73
       710- |         13        0.13       99.86
       8781 |          1        0.01       99.87
       8788 |          1        0.01       99.88
       8860 |          1        0.01       99.89
       8881 |          1        0.01       99.90
       8889 |          2        0.02       99.92
       9174 |          1        0.01       99.93
       9179 |          1        0.01       99.94
       9208 |          1        0.01       99.95
       9289 |          1        0.01       99.96
       9290 |          2        0.02       99.98
       9293 |          1        0.01       99.99
       9390 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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