Effect of barriers on the Clifton suspension bridge, England, on local patterns of suicide: implications for prevention

@article{Bennewith2007EffectOB,
  title={Effect of barriers on the Clifton suspension bridge, England, on local patterns of suicide: implications for prevention},
  author={Olive Bennewith and Mike Nowers and David Gunnell},
  journal={British Journal of Psychiatry},
  year={2007},
  volume={190},
  pages={266 - 267}
}
Summary We assessed the effect of the installation of barriers on the Clifton suspension bridge, Bristol, England, in 1998 on local suicides by jumping. Deaths from this bridge halved from 8.2 per year (1994–1998) to 4.0 per year (1999–2003; P=0.008). Although 90% of the suicides from the bridge were by males, there was no evidence of an increase in male suicide by jumping from other sites in the Bristol area after the erection of the barriers. This study provides evidence for the effectiveness… 

Suicidal behaviour and suicide from the Clifton Suspension Bridge, Bristol and surrounding area in the UK: 1994-2003.

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It is found that barriers installed at multiple bridge sites across Australia were a cost-saving intervention with a return of US $2.40 for every US $1 invested over 10 years.

Effectiveness of restricting access to a suicide jump site: a test of the method substitution hypothesis

  • A. BermanA. AtheyP. Nestadt
  • Psychology
    Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention
  • 2021
The decline in bridge suicide without persistent shifts in deaths to other bridges provides evidence that restricting access to one highly lethal method is effective, and may reflect a broader decline in suicide.

Suicide by Jumping.

A small number of studies provides evidence that installing barriers at popular jumping sites reduces suicides from those sites, and there are few reports of efforts to reduce suicides from high-rise residential buildings.
...

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