1. Department of Economics, University of Aberdeen, King’s College , Aberdeen AB24 3FX, United Kingdom
2. The Irish Longitudinal Study on Ageing (TILDA), Trinity College Dublin, Trinity Central , Dublin D02 R590, Republic of Ireland
3. Economic and Social Research Institute , Dublin 2 D02 K138, Republic of Ireland
4. Centre for Health Policy and Management, Trinity College Dublin , Dublin 2 , Republic of Ireland
5. Cicely Saunders Institute of Palliative Care, Policy & Rehabilitation, Kings College London , London SE5 9PJ, United Kingdom