Frequencies for first 10,000 rows of injdet variable in namcs2005 dataset :

                    is visit related to |
       injury/poisoning/adverse effect? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
         Unintentional injury/poisoning |        336        3.36        3.36
           Intentional injury/poisoning |         21        0.21        3.57
Adverse effect of med care/surg care/me |         68        0.68        4.25
                      None of the above |      8,957       89.57       93.82
                                Unknown |        436        4.36       98.18
                                  Blank |        182        1.82      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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