Health and aging: development of the Irish Longitudinal Study on Ageing health assessment.

Objectives: To assist researchers planning studies similar to The Irish Longitudinal Study on Ageing (TILDA), concerning the development of the health assessment component, to promote use of the archived data set, to inform researchers of the methods employed, and to complement the accompanying article on normative values.

Design: Prospective, longitudinal study of older adults.

Setting: Republic of Ireland.