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Encouraging Older Adults and Adults With Serious Illness to Designate a Health Care Proxy

A Randomized Trial to Encourage Older Adults and Adults With Serious Illness to Designate a Health Care Proxy

Status
Enrolling by invitation
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07290478
Enrollment
20000
Registered
2025-12-18
Start date
2026-06-01
Completion date
2027-09-13
Last updated
2026-09-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Designating a Healthcare Proxy

Keywords

healthcare proxy, advance care planning, end-of-life care, surrogate decision-maker, durable power of attorney, behavioral economics, pre-commitment

Brief summary

This study is a Stage III randomized trial to encourage patients in advance of a health care appointment to designate a healthcare proxy. Patients will be randomly assigned to receive a mailer containing information about designating a healthcare proxy, or to not receive any mailer. For patients assigned to receive a mailer, the mailer will differ by the presence or absence of a patient pre-commitment prompt, and contain a personalized provider request or a generic health system request. The work will evaluate the randomized trial and identify factors that predict intervention effectiveness.

Interventions

BEHAVIORALMailer

Patient mailers will ask the patient to name a healthcare proxy at their next primary care visit.

BEHAVIORALProvider Request

Patient mailers will be sent from and signed by the patient's provider for their next scheduled primary care visit.

Patient mailers will contain a box that asks the patient to bring a form with their choice for a healthcare proxy to their next primary care visit.

Sponsors

University of Southern California
Lead SponsorOTHER
National Institute on Aging (NIA)
CollaboratorNIH
Contra Costa Health
CollaboratorUNKNOWN

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE

Masking description

Hospital staff, including clinicians, will not be alerted to the patient's assigned intervention. However, clinicians may learn of the patient's assigned intervention if the patient brings their mailer to the visit.

Intervention model description

2 x 2 factorial + a no intervention control group

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* No EHR-documented healthcare proxy at enrollment * Age ≥ 55 years OR age ≥ 18 years and listed in the health system's cancer, CHF, or CKD registries

Exclusion criteria

* Primary care provider not assigned at time of randomization.

Design outcomes

Primary

MeasureTime frameDescription
Proportion of patients with EHR-documented healthcare proxyFrom randomization through 30 days after the patient's scheduled index primary care visit dateDocumentation in the electronic health record of a healthcare proxy

Secondary

MeasureTime frameDescription
Proportion of patients with legal advance care planning documentationFrom randomization through 30 days after the patient's scheduled index primary care visit dateDocumentation in the electronic health record of any legal advance care planning document, including an advance directive or power of attorney
Proportion of patients that attended scheduled visitOn the date of the patient's scheduled index primary care visitPatient attended the scheduled primary care visit
Proportion of patients with EHR-documented healthcare proxy through 90 daysFrom randomization through 90 days after the patient's scheduled index primary care visit dateDocumentation in the electronic health record of a healthcare proxy
Proportion of patients with legal advance care planning documentation through 90 daysFrom randomization through 90 days after the patient's scheduled index primary care visit dateDocumentation in the electronic health record of any legal advance care planning document, including an advance directive or power of attorney
Proportion of patients with primary care visit through 90 daysFrom randomization through 90 days after the patient's scheduled index primary care visit datePatient attended a primary care visit

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORMireille Jacobson, PhD

University of Southern California

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 2, 2026