Frequencies for first 10,000 rows of cause33d variable in nhamcsed2004 dataset :

             cause of injury #3 - broad |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   not applicable/blank |      9,955       99.55       99.55
                         drug use/abuse |          7        0.07       99.62
                      alcohol use/abuse |          9        0.09       99.71
                    place of occurrence |         20        0.20       99.91
accidental poisoning by analgesics/an.. |          1        0.01       99.92
             other and unspecified fall |          1        0.01       99.93
striking against or struck accidental.. |          1        0.01       99.94
caught accidentally in or between obj.. |          1        0.01       99.95
accidents caused by cutting and pierc.. |          1        0.01       99.96
                    psychotropic agents |          1        0.01       99.97
suicide and self-inflicted poisoning .. |          1        0.01       99.98
assault by cutting and piercing instr.. |          1        0.01       99.99
 child battering and other maltreatment |          1        0.01      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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