"A feeling that you're helping": proxy decision making for Alzheimer's research

Area of Science:

• Medical ethics
• Neuroscience
• Clinical research

Background:

• Surrogate decision-makers are crucial for research involving individuals with dementia who lack decision-making capacity.
• Understanding the decision-making processes of these proxies is essential for ethical research conduct.

Purpose of the Study:

• To investigate the factors influencing surrogate (proxy) decision-makers' consent for research participation of individuals with Alzheimer's disease (AD).
• To explore how proxies weigh potential risks and benefits when making research decisions for patients with diminished capacity.

Main Methods:

• Random assignment of 82 proxies for AD patients to one of three hypothetical research protocols with varying risk/benefit levels.
• Proxies answered questions regarding perceived patient and societal benefits, willingness to enroll, and rationale for their decisions.

Main Results:

• Proxies citing reasons for enrollment emphasized potential direct patient benefit, altruism, and trust in researchers.
• Proxies declining enrollment cited concerns about risks, inconvenience, and the patient's illness stage.
• Decision-making incorporated both substituted judgment (patient's likely preference) and best interests standards.

Conclusions:

• Proxy decision-making for research in dementia is complex, involving multiple factors.
• Findings can inform policies and guidelines for informed consent in research involving vulnerable populations.
• Further research is needed to fully understand the influences on and adequacy of proxy decision-making.