• Meredith Bock, Maya Katz, Stefan Sillau, Kwame Adjepong, Kristine Yaffe, Roman Ayele, Zachary A Macchi, Steven Pantilat, Janis M Miyasaki, and Benzi Kluger.
• Department of Neurology, University of California, San Francisco, California, USA; San Francisco Veterans Affairs Medical Center, San Francisco, California, USA. Electronic address: Meredith.Bock@ucsf.edu.
• J Pain Symptom Manage. 2022 Jun 1; 63 (6): 103110401031-1040.

ContextIncreasing evidence demonstrates the benefits of palliative care among individuals with Parkinson's disease and related disorders (PDRD), but the critical components that contribute to therapeutic effects are not well understood.ObjectivesTo determine the specific items most responsive to a palliative care intervention in PDRD and identify key correlates of improvement in patient and care partner outcomes.MethodsThe main trial was a pragmatic comparative effectiveness trial of outpatient integrated palliative care compared to standard care among participants with PDRD (NCT02533921), showing significantly higher patient QOL at six months and lower care partner burden at 12 months. We used longitudinal regression models to analyze changes in subdomains of patient QOL and care partner burden and Spearman correlations to evaluate key correlates of change scores in patient and care partner outcomes. We performed a secondary analysis of data from 210 patients and 175 care partners.ResultsCompared to controls, patients in the intervention reported greater improvement in perceptions of the "self as a whole" at six months (coeff = 0.22, P < 0.05) and care partners reported greater reduction in stress, anger, and loss of control at 12 months (coeff = -.40, -0.25, -0.31, P < 0.05). Positive change in numerous patient non-motor symptoms and grief correlated with improved patient QOL, reduced patient anxiety, and increased care partner spirituality. Alleviation of care partner anxiety and depression correlated with reduced care partner burden.ConclusionSpecific benefits of an integrated palliative approach in PDRD include improvement in patient holistic self-impressions, care partner self-efficacy, and non-motor symptoms.Copyright © 2022 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.

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