Evidence map›Paper›PMID 21733212›Full record

ArticlePsychological medicine2011

Familial clustering of suicide risk: a total population study of 11.4 million individuals.

D Tidemalm, B Runeson, M Waern, T Frisell, E Carlström, P Lichtenstein, N Långström

Open access · hybridAbstract read
In one paragraph

Article in Psychological medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 91 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
91citing papers in PubMed, 3 pooled it
11.4field-weighted citation impact, top 1% 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

91 citing papers in PubMed, 3 syntheses or guidelines pooled it, 195 citations in OpenAlex.

  1. Quantitative Methods to Detect Suicide and Self-Harm Clusters: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Loss of human life by suicide - lived experiences of suicide survivors and professionals.International journal of qualitative studies on health and well-being · 2026
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  10. Suicide Behavior as a Distinct Psychobiology in Major Depression.Advances in experimental medicine and biology · 2026
    Review
  11. Article
  12. Suicide prediction, prevention, and the blame culture: A narrative review based on trends in mortality rates.European psychiatry : the journal of the Association of European Psychiatrists · 2025
    Review
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31 more citing papers are in PubMed but not listed here.

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 at 2 institutions in 1 country.

D TidemalmDepartment of Clinical Neuroscience, Karolinska Institutet, Division of Psychiatry, Stockholm, Sweden. dag.tidemalm@ki.se
B Runeson
M Waern
T Frisell
E Carlström
P Lichtenstein
N Långström
Karolinska Institutet · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundResearch suggests that suicidal behaviour is aggregated in families. However, due to methodological limitations, including small sample sizes, the strength and pattern of this aggregation remains uncertain.

methodWe examined the familial clustering of completed suicide in a Swedish total population sample. We linked the Cause of Death and Multi-Generation Registers and compared suicide rates among relatives of all 83 951 suicide decedents from 1952-2003 with those among relatives of population controls.

resultsPatterns of familial aggregation of suicide among relatives to suicide decedents suggested genetic influences on suicide risk; the risk among full siblings (odds ratio 3.1, 95% confidence interval 2.8-3.5, 50% genetic similarity) was higher than that for maternal half-siblings (1.7, 1.1-2.7, 25% genetic similarity), despite similar environmental exposure. Further, monozygotic twins (100% genetic similarity) had a higher risk than dizygotic twins (50% genetic similarity) and cousins (12.5% genetic similarity) had higher suicide risk than controls. Shared (familial) environmental influences were also indicated; siblings to suicide decedents had a higher risk than offspring (both 50% genetically identical but siblings having a more shared environment, 3.1, 2.8-3.5 v. 2.0, 1.9-2.2), and maternal half-siblings had a higher risk than paternal half-siblings (both 50% genetically identical but the former with a more shared environment). Although comparisons of twins and half-siblings had overlapping confidence intervals, they were supported by sensitivity analyses, also including suicide attempts.

conclusionsFamilial clustering of suicide is primarily influenced by genetic and also shared environmental factors. The family history of suicide should be considered when assessing suicide risk in clinical settings or designing and administering preventive interventions.

Indexed as

Cluster AnalysisDatabases, FactualFamilyFamily RelationsFemaleHumansMaleRisk FactorsSpousesSuicideSuicide, AttemptedSwedenTwins, DizygoticTwins, Monozygotic

Identifiers

PMID21733212
PMCPMC3207221
OpenAlexW2033511562

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.