Evaluation of Family Caregivers' Use of Their Adult Care Recipient's Patient Portal From the 2019 Health Information National Trends Survey: Secondary Analysis.

Policies should enable patients to designate family caregivers who can access their patient portal. Providers could screen caregivers for challenges in their caregiving responsibilities that may be addressed through the portal so they can better support their adult relatives. Interventions to support family caregivers, especially older caregivers, in using their own portal may facilitate their use of their care recipient's portal.