Suicide Risk Assessment

Suicide risk assessment is the structured appraisal of a person's risk of self-inflicted death, drawing together suicidal thoughts, plans and intent, history of attempts, mental disorder, and the balance of risk and protective factors. In mental health nursing it is an engagement-centred process that informs safety planning and care rather than a numerical prediction of future suicide.

Definition

Suicide risk assessment is the systematic gathering and weighing of information about suicidal ideation, intent, plans, history, and modifying factors to characterise a person's current risk of suicide and to inform engagement and care planning.

Scope

The topic covers what suicide risk assessment is, the factors it weighs (ideation, intent, planning, prior attempts, access to means, and protective factors), the distinction between acute and chronic risk, and the limits of risk-prediction tools. It is reference and educational material describing how assessment is conceptualised, not instructions for clinical decision-making.

Core questions

• What distinguishes structured risk assessment from attempting to predict individual suicide?
• Which factors are weighed, and how do acute and chronic risk differ?
• Why do reviews caution against relying on risk-stratification scores alone?

Key concepts

• Suicidal ideation, intent, and planning
• History of prior attempts
• Access to lethal means
• Acute versus chronic risk
• Protective factors
• Risk stratification and its limits
• Therapeutic engagement

Mechanisms

Assessment combines direct enquiry about thoughts of death, suicidal ideation, intent, and any plan with appraisal of static factors (such as previous attempts and mental disorder) and dynamic, potentially modifiable factors (such as hopelessness, access to means, and social isolation). Reviews emphasise that the predictive accuracy of any single instrument or risk category for individual suicide is poor, so structured assessment is used to inform formulation, engagement, and care planning rather than to sort people reliably into outcome groups.

Clinical relevance

Suicide risk assessment is a routine part of mental health nursing across emergency, inpatient, and community settings, and how it is documented shapes communication within teams. This entry explains the concept and its evidence base; it is not a protocol, and it does not provide criteria for individual safety or admission decisions.

Epidemiology

Suicide is a leading cause of death worldwide, with the World Health Organization estimating hundreds of thousands of deaths annually and a substantially larger number of non-fatal attempts; prior self-harm and certain mental disorders are among the most consistently reported correlates of later suicide.

Evidence & guidelines

Narrative reviews and national guidance, including NICE guidance on self-harm and the WHO global report on suicide prevention, converge on assessing the person comprehensively while warning that brief risk-stratification tools should not be used to determine who receives care.

History

Clinical interest in identifying suicidal patients grew through the twentieth century alongside rating scales for ideation and hopelessness. More recent guidance has shifted emphasis away from categorical risk prediction toward needs-based assessment and engagement, reflecting accumulating evidence on the limits of prediction.

Debates

Should risk-stratification tools guide care decisions?

Reviews and guidance argue that no instrument predicts individual suicide accurately enough to determine treatment or admission, and that over-reliance on risk categories can be misleading; the role of structured tools therefore remains contested.

Key figures

• Gustavo Turecki
• David Gunnell

Seminal works

• bolton-2015
• turecki-2016

Frequently asked questions

Can a questionnaire reliably predict whether someone will die by suicide?

No. Reviews and guidance find that risk-assessment tools have poor individual-level predictive accuracy; they are used to structure assessment and care, not to predict outcomes.

What is the difference between acute and chronic suicide risk?

Acute risk refers to imminent, often fluctuating danger driven by current state and circumstances, whereas chronic risk reflects longer-standing factors such as a history of attempts; both are considered together in assessment.