Suicide and Self-Harm Risk Assessment

Suicide and self-harm risk assessment is the structured evaluation of suicidal ideation, behaviour, and associated risk factors in order to identify people who may be in danger of harming themselves and to guide protective response. As a preventive activity it sits alongside mental-health screening but focuses specifically on detecting and characterising suicide risk.

Definition

Suicide and self-harm risk assessment is the systematic appraisal of suicidal ideation, intent, plans, and prior self-harm, together with contributory risk and protective factors, used to identify and characterise individuals who may be at risk of suicide.

Scope

The topic covers the distinction between screening for suicide risk and clinical risk assessment, the structured tools used to characterise ideation and behaviour (notably the Columbia-Suicide Severity Rating Scale), the limited certainty of current evidence on standalone suicide screening, and the framing of risk assessment within broader prevention. It is a reference entry on assessment methods and does not provide crisis management or individualised clinical direction.

Core questions

• How does screening for suicide risk differ from comprehensive clinical risk assessment?
• Which structured instruments help characterise the severity of ideation and behaviour?
• What does current evidence say about the benefits and harms of routine suicide-risk screening?

Key concepts

• Suicidal ideation, intent, and plan
• Self-harm and prior attempt history
• Columbia-Suicide Severity Rating Scale (C-SSRS)
• Risk and protective factors
• Screening versus comprehensive assessment
• Safety planning

Mechanisms

Risk assessment gathers structured information about the presence, frequency, and intensity of suicidal thoughts, the existence of intent and plans, and the history of self-harm, alongside contributory factors such as prior attempts and psychiatric illness. Instruments like the Columbia-Suicide Severity Rating Scale standardise this characterisation so that ideation and behaviour are described on consistent dimensions. The aim is to inform protective response; because suicide is relatively rare and multidetermined, assessment characterises risk rather than reliably predicting individual outcomes.

Clinical relevance

Structured assessment supports clinicians in recognising and describing suicide risk, and risk characterisation informs decisions about further evaluation and support. This entry describes assessment methods at a reference level; it is not a crisis protocol and does not provide individualised guidance. People in immediate danger require urgent professional help.

Epidemiology

Suicide is a major global cause of premature death, and prior self-harm is among the strongest markers of subsequent risk. For routine standalone screening of suicide risk in asymptomatic adults, the US Preventive Services Task Force concluded that current evidence is insufficient to assess the balance of benefits and harms, while continuing to recommend depression screening, which can surface suicidal symptoms.

History

Structured approaches to characterising suicide risk advanced in the 2000s with scales such as the Columbia-Suicide Severity Rating Scale, introduced in 2011 to provide consistent definitions of ideation and behaviour across studies and settings. Global prevention frameworks, including the World Health Organization's 2014 report, situated assessment within population strategies, while evidence reviews for preventive screening have repeatedly found uncertainty about the value of routine standalone suicide-risk screening.

Debates

Should asymptomatic adults be routinely screened for suicide risk?

Evidence reviews have found insufficient certainty about the benefits and harms of standalone suicide-risk screening in primary care, leading guideline bodies to issue insufficient-evidence statements while still recommending depression screening that can detect suicidal symptoms.

Key figures

• Kelly Posner
• J. John Mann
• Barbara Stanley

Seminal works

• posner-2011
• uspstf-depression-2023

Frequently asked questions

Is suicide risk assessment the same as screening?

No. Screening uses brief questions to flag people who may need further evaluation, whereas comprehensive risk assessment is a fuller appraisal of ideation, intent, plans, history, and contributory factors to characterise an individual's risk.

Can risk assessment predict whether someone will attempt suicide?

Risk assessment characterises and stratifies risk but cannot reliably predict individual outcomes, because suicide is relatively rare and arises from many interacting factors; assessment informs protective response rather than forecasting events.