Evidence map›Paper›PMID 37721170›Full record

ArticleEpidemiology and psychiatric sciences2023

Structural intervention at one bridge decreases the overall jumping suicide rate in Victoria, Australia.

J Dwyer, M J Spittal, K Scurrah, J Pirkis, L Bugeja, A Clapperton

Abstract read
In one paragraph

Article in Epidemiology and psychiatric sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Uncovering Means Restriction Activities for Suicide Prevention That Have Been Undertaken in Australia: A Scoping Review.Asia-Pacific psychiatry : official journal of the Pacific Rim College of Psychiatrists · 2026
    Article
  3. Review
  4. Change in suicides during and after the installation of barriers at the Golden Gate Bridge.Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention · 2025
    Article
  5. Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

J DwyerCoroners Prevention Unit, Coroners Court of Victoria, Southbank, VIC, Australia.
M J SpittalMelbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia.ORCID https://orcid.org/0000-0002-2841-1536
K ScurrahMelbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia.
J PirkisMelbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia.ORCID https://orcid.org/0000-0002-2538-4472
L BugejaMonash Nursing and Midwifery, Monash University, Clayton, VIC, Australia.
A ClappertonMelbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia.ORCID https://orcid.org/0000-0002-6129-3404

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThere is clear evidence that installing safety barriers is effective in preventing jumping suicides from high-risk bridges with only moderate displacement to other nearby bridges. However, the impact of barriers on jumping suicides across broader geographical areas is not well understood. We examined patterns in jumping suicides across the state of Victoria, Australia, after a safety barrier was installed at the West Gate Bridge which, before the installation of the barrier, was the site of approximately 40% of Victoria's jumping suicides.

methodsWe used negative binomial regression analyses on Victorian data from 2000 to 2019 to compare rates of jumping suicides at the West Gate Bridge, other bridges and non-bridge jumping locations before, during and after the West Gate Bridge barrier installation. We conducted linear regression analyses to examine whether the distance travelled from the deceased's usual residence to the location of their jumping suicide changed between the before, during and after barrier installation periods.

resultsAfter installation of the barrier, there were no jumping suicides at the West Gate Bridge (rate ratio [RR] = 0.00, 95% credible intervals [95% Cr] = 0.00-0.0001) and there was strong evidence that the rate of jumping suicides at all locations declined by 65% (RR = 0.35, 95% Cr = 0.22-0.54). At other bridges, there was also evidence of a reduction (RR = 0.31, 95% Cr = 0.11-0.70), but there was no evidence of a change at non-bridge locations (RR = 0.74, 95% Cr = 0.39-1.30).

conclusionAfter installation of the safety barrier at the West Gate Bridge, jumping suicide in Victoria decreased overall and at other bridges, and did not appear to change at non-bridge locations. Our findings show that when barriers are installed at a site responsible for a disproportionately high number of jumping suicides, they are not only highly effective at the site where the barriers are installed but can also have a prevention impact beyond the immediate locale at similar sites.

Indexed as

SuicideHumansTravelVictoriaepidemiologymental healthresearch design and methodssuicide

Identifiers

PMID37721170
PMCPMC10539743

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.