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

    died at |
   scene/en |
      route |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,419       74.19       74.19
          7 |      2,564       25.64       99.83
          8 |         13        0.13       99.96
          9 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016