Frequencies for first 10,000 rows of person variable in nhamcsed1996 dataset :

           person who caused the injury |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
Not applicable (not a violence-related  |      9,679       96.79       96.79
                                 Spouse |         12        0.12       96.91
                 Other intimate partner |         18        0.18       97.09
                                 Parent |          5        0.05       97.14
                           Other family |          8        0.08       97.22
                              Caretaker |          2        0.02       97.24
                    Friend/acquaintance |         20        0.20       97.44
                               Stranger |         53        0.53       97.97
                                Unknown |        165        1.65       99.62
                                  Other |         38        0.38      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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