An empirical study of proxy consent for elderly persons.

Area of Science:

• Gerontology
• Bioethics
• Decision Science

Background:

• Empirical assumptions about substituted judgment are not well-established.
• Understanding how proxy decision-makers align with patient preferences is crucial for ethical healthcare.
• Durable powers of attorney are common legal tools for proxy decision-making.

Purpose of the Study:

• To empirically investigate the accuracy of substituted judgment compared to best recommendation in proxy decision-making.
• To assess the alignment of proxy decisions with the preferences of competent elderly individuals.
• To evaluate the effectiveness of substituted judgment in reflecting patient autonomy.

Main Methods:

• Three treatment decision scenarios were presented to participants.
• Participants included 43 competent elderly individuals and 115 of their related proxies.
• Proxies were assigned to either a substituted judgment condition or a best recommendation condition.

Main Results:

• Proxies instructed to use substituted judgment significantly approximated the elderly persons' preferences more closely than those making a best recommendation.
• Statistical significance was observed (p = .005-.067), depending on the measurement index used.
• The study identified potential limitations associated with the use of durable powers of attorney in practice.

Conclusions:

• The findings support the use of a substituted judgment approach for proxy decision-makers in healthcare.
• Substituted judgment appears to be a more effective method for aligning proxy decisions with patient values.
• Further research is needed to address the identified limitations of durable powers of attorney.