These collections gather large volumes of data to provide information on Irish health and social care services, and this catalogue combines information about them in a single location. The Catalogue of National Health and Social Care Data Collections was first published in 2010. This updated version includes 108 collections.

To assist in categorising the health and social care data collections in Ireland, they have been grouped into the following sub-categories in the document:
• National collections of health and social care data collections in Ireland.
• National censuses.
• Collections without national coverage/regional collections.
• Systems that collated data from a number of different data collections.
• National surveys.