Frequencies for first 10,000 rows of place variable in nhamcsopd1995 dataset :

       place of occurrence of injury |      Freq.     Percent        Cum.
-------------------------------------+-----------------------------------
Not applicable (not an injury visit) |      8,992       89.92       89.92
                                Home |        128        1.28       91.20
                              School |         16        0.16       91.36
               Sports/Athletics Area |         26        0.26       91.62
                      Street/highway |         95        0.95       92.57
                         Other place |        133        1.33       93.90
                       Unknown place |        610        6.10      100.00
-------------------------------------+-----------------------------------
                               Total |     10,000      100.00

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