Evidence map›Paper›PMID 19535151›Full record

ArticleJournal of affective disorders2010

Seasonal spring peaks of suicide in victims with and without prior history of hospitalization for mood disorders.

Teodor T Postolache, Preben B Mortensen, Leonardo H Tonelli, Xiaolong Jiao, Constantin Frangakis, Joseph J Soriano, Ping Qin

Abstract read
In one paragraph

Article in Journal of affective disorders, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. The Cruelty of April: Suicide in Spring.Federal practitioner : for the health care professionals of the VA, DoD, and PHS · 2025
    Article
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  10. Review
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  12. Potential lethality of suicide attempts in youth.European child & adolescent psychiatry · 2022
    Article
  13. Proposed Pathway Linking Respiratory Infections with Depression.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2022
    Review
  14. Article
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  17. Review
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  19. Article
  20. Seasonality of Suicides among Victims Who Are under the Influence of Alcohol.International journal of environmental research and public health · 2019
    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

7 authors.

Teodor T PostolacheDepartment of Psychiatry, University of Maryland School of Medicine, Baltimore, MD 21201, USA. tpostola@psych.umaryland.edu
Preben B Mortensen
Leonardo H Tonelli
Xiaolong Jiao
Constantin Frangakis
Joseph J Soriano
Ping Qin

Funding

SEASONALITY OF SUICIDE AND AIRBORNE ALLERGENSR01MH074891 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI POSTOLACHE, TEODOR T · 2007 to 2009
$1.0M
NIMH NIH HHS R01 MH074891NIMH NIH HHS R01MH074891
6 · The paper itself

Abstract

backgroundSeasonal spring peaks of suicide are highly replicated, but their origin is poorly understood. As the peak of suicide in spring could be a consequence of decompensation of mood disorders in spring, we hypothesized that prior history of mood disorders is predictively associated with suicide in spring.

methodsWe analyzed the monthly rates of suicide based upon all 37,987 suicide cases in the Danish Cause of Death Registry from 1970 to 2001. History of mood disorder was obtained from the Danish Psychiatric Central Register and socioeconomical data from the Integrated Database for Labour Market Research. The monthly rate ratio of suicide relative to December was estimated using a Poisson regression. Seasonality of suicide between individuals with versus without hospitalization for mood disorders was compared using conditional logistic regression analyses with adjustment for income, marital status, place of residence, and method of suicide.

resultsA statistically significant spring peak in suicide was observed in both groups. A history of mood disorders was associated with an increased risk of suicide in spring (for males: RR=1.18, 95% CI 1.07-1.31; for females: RR=1.20, 95% CI 1.10-1.32). LIMITATIONS: History of axis II disorders was not analyzed. Danish socioeconomical realities have only limited generalizability.

conclusionsThe results support the need to further investigate if exacerbation of mood disorders in spring triggers seasonal peaks of suicide. Identifying triggers for seasonal spring peaks in suicide may lead to uncovering novel risk factors and therapeutic targets for suicide prevention.

Indexed as

SeasonsAdultBipolar DisorderCause of DeathCross-Sectional StudiesDenmarkDisease ProgressionFemaleHumansIncidenceMajor Depressive DisorderMaleMiddle AgedPatient ReadmissionPoisson DistributionRecurrence

Identifiers

PMID19535151
PMCPMC2837087

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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.