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

    DEAD ON |
    ARRIVAL |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,614       76.14       76.14
          7 |      2,340       23.40       99.54
          8 |         34        0.34       99.88
          9 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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