Evidence map›Paper›PMID 21569569›Full record

ArticleBMC public health2011

Suicide epidemics: the impact of newly emerging methods on overall suicide rates - a time trends study.

Kyla Thomas, Shu-Sen Chang, David Gunnell

Open access · goldAbstract read
In one paragraph

Article in BMC public health, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.7field-weighted citation impact, top 6% of its field
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

20 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Sodium Nitrite Intoxication and Death: Summarizing Evidence to Facilitate Diagnosis.International journal of environmental research and public health · 2022
    Review
  5. Article
  6. Article
  7. Article
  8. Place, the Built Environment, and Means Restriction in Suicide Prevention.International journal of environmental research and public health · 2019
    Article
  9. Article
  10. The association between suicide deaths and putatively harmful and protective factors in media reports.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2018
    Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Suicide: An Indian perspective.Indian journal of psychiatry · 2012
    Article
  19. Means restriction for suicide prevention.Lancet (London, England) · 2012
    Review
  20. Suicide methods in Asia: implications in suicide prevention.International journal of environmental research and public health · 2012
    Review
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

3 authors at 2 institutions in 2 countries.

Kyla ThomasSchool of Social and Community Medicine, University of Bristol, Bristol, UK. kyla.thomas@bristol.ac.uk
Shu-Sen Chang
David Gunnell
University of Bristol · GBChung Shan Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe impact of newly emerging, popular suicide methods on overall rates of suicide has not previously been investigated systematically. Understanding these effects may have important implications for public health surveillance. We examine the emergence of three novel methods of suicide by gassing in the 20th and 21st centuries and determine the impact of emerging methods on overall suicide rates.

methodsWe studied the epidemic rises in domestic coal gas (1919-1935, England and Wales), motor vehicle exhaust gas (1975-1992, England and Wales) and barbecue charcoal gas (1999-2006, Taiwan) suicide using Poisson and joinpoint regression models. Joinpoint regression uses contiguous linear segments and join points (points at which trends change) to describe trends in incidence.

resultsEpidemic increases in the use of new methods of suicide were generally associated with rises in overall suicide rates of between 23% and 71%. The recent epidemic of barbecue charcoal suicides in Taiwan was associated with the largest rise in overall rates (40-50% annual rise), whereas the smallest rise was seen for car exhaust gassing in England and Wales (7% annual rise). Joinpoint analyses were only feasible for car exhaust and charcoal burning suicides; these suggested an impact of the emergence of car exhaust suicides on overall suicide rates in both sexes in England and Wales. However there was no statistical evidence of a change in the already increasing overall suicide trends when charcoal burning suicides emerged in Taiwan, possibly due to the concurrent economic recession.

conclusionsRapid rises in the use of new sources of gas for suicide were generally associated with increases in overall suicide rates. Suicide prevention strategies should include strengthening local and national surveillance for early detection of novel suicide methods and implementation of effective media guidelines and other appropriate interventions to limit the spread of new methods.

Indexed as

AdolescentAdultAgedEnglandFemaleGas PoisoningHumansMaleMiddle AgedPopulation SurveillanceSuicideWalesYoung Adult

Identifiers

PMID21569569
PMCPMC3112128
OpenAlexW2120339129

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.