Frequencies for first 10,000 rows of place variable in namcs2000 dataset :

       place of occurrence of injury |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
                           Residence |        157        1.57        1.57
              Recreation/sports area |         44        0.44        2.01
                      Street/highway |         64        0.64        2.65
                              School |         24        0.24        2.89
               Other public building |         22        0.22        3.11
                    Industrial place |        106        1.06        4.17
                               Other |         24        0.24        4.41
                             Unknown |        558        5.58        9.99
Not applicable (not an injury visit) |      9,001       90.01      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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