The Impact of Varying Levels of Advance Care Planning Engagement on Perceptions of the End-of-Life Experience Among Caregivers of Deceased Patients With Cancer.

This was an observational analysis of existing survey data, so it cannot show that advance care planning caused a better caregiver view of the death. Caregiver reports were retrospective, and the authors note recall bias because people may reframe experiences more positively over time. The authors report that 72% (n = 710) of interviews were conducted within a year of death, but the interview window was still large. The caregiver was a proxy informant, not necessarily the person who provided hands-on care, and caregiver characteristics such as extent of caregiving and education were missing. ACP engagement was measured only by yes/no answers about written instructions, a surrogate arrangement, and a discussion, so it did not capture the quality or timing of ACP. The analysis included only cancer deaths where end-of-life decisions occurred, so it may not apply to situations where such decisions are not required. The measurement model started with seven end-of-life perception items but used four after re-specification: all care, limit care, withhold care, and comfort care. The study did not test an intervention, guideline, or workflow change.

The paper reports that the HRS is sponsored by the National Institute on Aging (grant number NIA U01 AG009740) and conducted by the University of Michigan. No author conflicts of interest or funding for this analysis are stated in the supplied text.

Do not read this as proof that advance care planning causes a better caregiver view of the death. The study compared retrospective caregiver reports in existing survey data and did not test an ACP intervention, so the association may reflect other differences between families who were more engaged and families who were not.