Suicide among cancer patients

Area of Science:

• Oncology
• Epidemiology
• Psychiatry

Background:

• Suicide is a significant public health concern.
• Cancer patients may experience increased psychological distress, elevating suicide risk.
• Identifying high-risk cancer patient subgroups is crucial for targeted interventions.

Purpose of the Study:

• To determine cancer patients at the highest risk of suicide compared to the general population and other cancer patients.
• To identify specific cancer types and demographic factors associated with elevated suicide risk.

Main Methods:

• Retrospective, population-based study utilizing the Surveillance, Epidemiology, and End Results (SEER) program data from 1973-2014.
• Analysis of 8,651,569 cancer patients, with a focus on 13,311 suicides.
• Calculation of suicide rates and standardized mortality ratios (SMRs) to compare risk.

Main Results:

• The overall suicide rate among cancer patients was 28.58 per 100,000 person-years, with an SMR of 4.44.
• Males (83%) and white individuals (92%) predominated among cancer patients who died by suicide.
• Cancers of the lung, head and neck, testes, bladder, and Hodgkin lymphoma exhibited the highest SMRs (>5-10).
• Elderly, white, unmarried males with localized disease were identified as the highest-risk group.
• For patients diagnosed under 50, hematologic and testicular tumors were most common among suicides; for those over 50, prostate, lung, and colorectal cancers were most frequent.

Conclusions:

• Cancer patients have a substantially elevated risk of suicide compared to the general population.
• Specific demographic (elderly, white, unmarried males) and cancer-related factors (localized disease, certain cancer types) are associated with the highest suicide risk.
• Findings underscore the need for proactive mental health support and suicide prevention strategies tailored to high-risk cancer patient populations.