SAD PERSONS Suicide Risk Score
The SAD PERSONS scale is a 10-item clinical assessment tool for evaluating suicide risk. It uses a simple mnemonic-based scoring system to stratify patients into low, moderate, and high risk categories to guide clinical decision-making.
About
The SAD PERSONS scale was developed as a clinical mnemonic and assessment tool to assist clinicians in evaluating suicide risk. The acronym SAD PERSONS stands for: Sex (male), Age (older or younger), Depression, Previous attempt, Ethanol use, Rational thinking loss, Social support lacking, Organized plan, No spouse, Sickness. Each item is scored 1 if present and 0 if absent, yielding a total score of 0 to 10. The scale was originally described by Patterson et al. in 1983 and has been modified by Hockberger and Rothstein (1988). Despite its widespread use in emergency departments, the SAD PERSONS scale has modest predictive validity compared to clinician judgment. However, it remains a useful structured approach to suicide risk assessment, helping ensure that key risk factors are systematically considered. The scale is best used as an adjunct to clinical judgment rather than a standalone decision-making tool.
Formula
SAD PERSONS Score = Sex + Age + Depression + Previous Attempt + Ethanol + Rational Thinking Loss + Social Support Lacking + Organized Plan + No Spouse + Sickness (each 0 or 1)
The SAD PERSONS score is the simple sum of 10 dichotomous items, each scored 1 (present) or 0 (absent). Total scores range from 0 to 10. Higher scores indicate greater suicide risk. Clinical actions are typically recommended based on total score: 0-4 (manage in outpatient setting), 5-6 (consider admission), and 7-10 (admission strongly recommended).
Score Interpretation
The SAD PERSONS scale is one of the most widely taught suicide risk assessment tools in medical education, particularly in emergency medicine and psychiatry. Its primary value lies in providing a structured, mnemonic-based framework that ensures systematic consideration of key suicide risk factors. However, clinicians should be aware of its limitations: studies have shown modest predictive validity, with sensitivity of 48-96% and specificity of 35-90% depending on the cutoff used. The scale is best used as a supplement to, not a replacement for, comprehensive clinical suicide risk assessment. The SAD PERSONS scale is recommended for use in emergency departments, primary care, and mental health settings as part of a thorough suicide risk evaluation. Clinical judgment remains paramount in suicide risk assessment.
Low Risk — 0–4
Score 0-4. Low suicide risk. May discharge with outpatient follow-up.
Management: Provide crisis resources, arrange outpatient follow-up, and ensure safe environment.
Moderate Risk — 5–6
Score 5-6. Moderate suicide risk. Strongly consider psychiatric admission.
Management: Consider admission to psychiatric unit. Implement suicide precautions. Conduct comprehensive risk assessment.
High Risk — 7–10
Score 7-10. High suicide risk. Psychiatric admission is indicated.
Management: Admit to psychiatric unit. Continuous observation. Remove lethal means. Urgent psychiatric treatment.
Reference Ranges
| Population | Normal Range | Notes |
|---|---|---|
| Adults (18+ years) — general clinical population | 0 – 4 (Low risk) | Outpatient management appropriate |
| Adults (18+ years) — general clinical population | 5 – 6 (Moderate risk) | Consider psychiatric admission |
| Adults (18+ years) — general clinical population | 7 – 10 (High risk) | Psychiatric admission strongly recommended |
Dr. Ahmed Abdelrahman
Dr. Ahmed is a healthcare management consultant with over 15 years of experience in clinical practice and medical education.
View medical review board & editorial policy →Example Calculation
A 22-year-old male (1) presents to the emergency department after his roommate found him with a bottle of pills. He has a history of depression (1) and a previous suicide attempt (1). He admits to drinking heavily (1) and states he has been feeling hopeless. He has a specific plan to overdose (1) and recently broke up with his girlfriend (1). He is otherwise healthy (0). SAD PERSONS score = 6/10. Clinical recommendation: admit to psychiatric unit for stabilization and comprehensive assessment.
Related Conditions
Related Medications
Common Mistakes
Using SAD PERSONS as the sole determinant of disposition decisions
SAD PERSONS should supplement, not replace, clinical judgment. A high score should always prompt thorough assessment, but a low score does not rule out risk.
Not considering protective factors alongside SAD PERSONS
Assess protective factors (family support, future orientation, treatment engagement) to provide a balanced risk formulation.