Validating care and treatment scenarios for measuring decisional conflict regarding future care preferences among older adults.

"we employed the 10-item 'low literacy' version which uses a question format and modified response scale (yes unsure no) which can be computed by an algorithm to yield scores between 0 and 100 across four subscales (informed values clarity support and uncertainty) and an overall score 2 4 a data analysis plan was prepared and preregistered before analysis (available at https://osf io/y8dx5 ).; data availability statement the analysis plan scenarios and deidentified data set are publicly available on the project page on open science framework (https://osf io/sahnf) .; data that support the findings of this study are openly available in the open science framework at https://osf io/sahnf . data availability statement the analysis plan scenarios and deidentified data set are publicly available on the project page on open science framework"

"CONFLICT OF INTEREST STATEMENT The authors declare no conflicts of interest."

"The authors acknowledge the developers of the ACP Engagement Scale and www.prepareforyourcare.org website for permission to translate and adapt these resources for use in the current study. The authors acknowledge the support of a range of organisations in distributing this survey and encouraging participation. This study was funded by a grant from the Australian Government National Health and Medical Research Council (GNT2006283). Open access publishing facilitated by University of New South Wales, as part of the Wiley ‐ University of New South Wales agreement via the Council of Australian University Librarians."