This project was funded by the Nuffield Foundation and was a collaboration between the Personal Social Services Research Unit at Kent and LSE, the Health Economics Group at the University of East Anglia and the National Centre for Social Research (NatCen). It developed a new module of survey questions which has now been adopted in the Health Survey for England and the English Longitudinal Study of Ageing. Details of the module and the research which underpins it are available here.