Impact of sudden mass mortality on suicides

Details Impact of sudden mass mortality on suicides Impact of sudden mass mortality on suicides

2009-09-13

arxiv.org/abs/0909.2425v1

Physics

Data Analysis, Statistics and Probability

9 pages, 3 tables

Scientific paper

We show that a large scale mass mortality results in increased numbers of suicides. As a case in point, we consider the influenza epidemic of October 1918 in the United States. In this month, suicides peaked at a level of over 4s (where s denotes the desaisonalized standard deviation of the suicide rate) which means that one would expect such a jump to occur merely by chance only once in several centuries. The mechanism that we propose to explain this effect relies on two steps (i) Mass mortalities break family bonds for instance between parents and children or husbands and wives. (ii) Increased numbers of suicides then result from the well known fact that the severance of family bonds invariably produces more suicides.

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