Which clinical feature best distinguishes high-risk suicide attempters from low-risk attempters in patients with major depressive disorder?

Explanation

## Distinguishing High-Risk from Low-Risk Suicide Attempters ### Key Discriminators in Suicide Risk **High-Yield:** The single most powerful discriminator between high-risk and low-risk suicide attempters is **previous suicide attempt with high lethality method** combined with **male gender**. These are static risk factors with the strongest predictive validity for future completed suicide. ### Comparison Table: High-Risk vs Low-Risk Features | Feature | High-Risk Attempter | Low-Risk Attempter | |---------|-------------------|-------------------| | **Previous attempt** | Yes, high lethality (hanging, jumping, firearms) | No, or low lethality (superficial cutting) | | **Gender** | Male (3–4× higher completion rate) | Female (more attempts, lower completion) | | **Method planning** | Specific, detailed, low rescue potential | Impulsive, high rescue potential | | **Psychiatric comorbidity** | Substance use, personality disorder, psychosis | Adjustment disorder, reactive depression | | **Age** | >45 years or adolescent male | Young adult female | | **Social isolation** | Severe, chronic | Recent, situational | ### Why This Matters Clinically **Clinical Pearl:** History of previous suicide attempt is the single strongest predictor of future completion. Male attempters who choose highly lethal methods (hanging, jumping from height, firearms) have 10–15× higher risk of completion than female attempters using low-lethality methods (overdose, cutting). **Key Point:** Core depressive symptoms (depressed mood, anhedonia, early morning awakening, appetite loss) are **necessary but not sufficient** to identify high-risk patients. Many depressed patients do not attempt suicide; the discriminator is the **combination of intent + method lethality + male gender + prior attempt**. **Mnemonic:** **RAMP** — **R**epeat attempt (high lethality), **A**ge (>45 or adolescent male), **M**ethod (violent, low rescue), **P**rior planning (specific, detailed). ### Why Other Options Are Insufficient - **Depressed mood + anhedonia**: Present in most depressed patients; does not distinguish those at imminent risk of completion. - **Psychosocial stressor + family history**: Increases vulnerability but lacks specificity; many with these factors never attempt. - **Neurovegetative symptoms**: Markers of depression severity, not suicide risk per se.