How can we interpret proxy reports of HRQL when it is no longer possible to obtain a self-report from people with dementia?

SC Smith ; AAJ Hendriks ; T Chrysanthaki ; S Cano ; N Black ; (2015) How can we interpret proxy reports of HRQL when it is no longer possible to obtain a self-report from people with dementia? [Conference or Workshop Item] https://researchonline.lshtm.ac.uk/id/eprint/2344715