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Symmetric mortality and asymmetric suicide cycles

Wen-Chieh Wu and Hui-Pei Cheng

Soc Sci Med 70(12):8 (2010) PMID 20378221

In this investigation, tests were performed to determine whether mortality cycles are asymmetric. Results from an asymmetry test of U.S. time-series data from 1951 to 2005 provide no evidence that all-cause mortality or mortality caused by disease causes asymmetric cycles. However, the rate of fatalities from suicide exhibits the pattern of an asymmetric cycle. The evidence for asymmetric suicide cycles is statistically significant for men and working-age groups but not for women and non-working-age groups.

Copyright © 2010 Elsevier Ltd. All rights reserved.

DOI: 10.1016/j.socscimed.2010.01.052
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