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

    Died at |
   scene/en |
      route |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,487       74.87       74.87
          7 |      2,497       24.97       99.84
          8 |         14        0.14       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016