Journal article

Trajectories in suicide attempt method lethality over a five-year period: Associations with suicide attempt repetition, all-cause, and suicide mortality

Katrina Witt, Jane Pirkis, Debbie Scott, Karen Smith, Dan Lubman

PLOS ONE | PUBLIC LIBRARY SCIENCE | Published : 2021

Abstract

It is not known if there are discernible patterns in method lethality over successive episodes of self-harm and, if so, how these may be differentially associated with risks of self-harm repetition and suicide. Latent trajectory modelling estimated variation in patterns of suicide attempt lethality in 1,719 individuals attended by ambulance services on at least three occasions between 2012 and 2016. Cox regression modelling investigated hazards of suicide attempt repetition, all-cause, and suicide mortality as a function of these patterns. Two distinct trajectories provided optimal fit (BIC: -39,464.92). The first (Low/Moderate to Low/Moderate Lethality group; 92.5%) consisted of those consi..

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Grants

Awarded by American Foundation for Suicide Prevention


Funding Acknowledgements

This project was supported by a postdoctoral fellowship (PDF-0-145-16) awarded to KW from the American Foundation for Suicide Prevention. Funding from beyondblue with donations from the Movember Foundation (awarded to DL) also supported this work. The content is solely the responsibility of the authors and does not necessarily represent the official views of the American Foundation for Suicide Prevention.