To the Editor: I thank Dr. Smith for his comments. Some of the women who died on Friday the 13th were, of course, injured some days previously. This would not invalidate my argument. It is sufficient that in some proportion of the cases, the accident and the death occurred on the same day. During the 1970s, 75% of the people killed as a result of traffic accidents in this country died at the scene of the accident or en route to the hospital (1), and an additional proportion died in the hospital on the same day. The percentage of more or less immediate deaths may have declined now because of improved emergency services, but more recent data are difficult to come by. In Denmark, where distances are short, 68% of the persons who died in traffic in 1986–1991 were dead upon arrival at the emergency unit, and 88% died within the first day (2). Comparable proportions of quick deaths in this case would be sufficient to provide a sound basis for the conclusion reached in my article.