Cohort profile update: the harmonised cognitive assessment protocol sub-study of the Northern Ireland Cohort for the Longitudinal Study of Ageing (NICOLA-HCAP)

Calum Marr; Leeanne O'Hara; Nicola A Ward; Stanley Simoes; Michael McAlinden; Charlotte Sterling; Claire Potter; David R Weir; Bernadette McGuinness

doi:10.1093/ije/dyag029

Cohort profile update: the harmonised cognitive assessment protocol sub-study of the Northern Ireland Cohort for the Longitudinal Study of Ageing (NICOLA-HCAP)

Calum Marr
, Leeanne O'Hara
, Nicola A Ward^*
, Stanley Simoes
, Michael McAlinden
, Charlotte Sterling
, Claire Potter
, David R Weir
, Bernadette McGuinness

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Original language	English
Article number	dyag029
Number of pages	9
Journal	International Journal of Epidemiology
Volume	55
Issue number	2
Early online date	05 Mar 2026
DOIs	https://doi.org/10.1093/ije/dyag029
Publication status	Published - Apr 2026

Keywords

NICOLA
HCAP
Dementia
cognitive decline
MCI
longitudinal cohort study

Access to Document

10.1093/ije/dyag029Licence: CC BY

Cohort profile update: the harmonised cognitive assessment protocol sub-study of the Northern Ireland Cohort for the Longitudinal Study of Ageing (NICOLA-HCAP)
Copyright 2026 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 918 KBLicence: CC BY

Cite this

Marr, C., O'Hara, L., Ward, N. A., Simoes, S., McAlinden, M., Sterling, C., Potter, C., Weir, D. R., & McGuinness, B. (2026). Cohort profile update: the harmonised cognitive assessment protocol sub-study of the Northern Ireland Cohort for the Longitudinal Study of Ageing (NICOLA-HCAP). International Journal of Epidemiology, 55(2), Article dyag029 . https://doi.org/10.1093/ije/dyag029

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Marr, C , O'Hara, L , Ward, NA , Simoes, S, McAlinden, M, Sterling, C , Potter, C, Weir, DR & McGuinness, B 2026, 'Cohort profile update: the harmonised cognitive assessment protocol sub-study of the Northern Ireland Cohort for the Longitudinal Study of Ageing (NICOLA-HCAP)', International Journal of Epidemiology, vol. 55, no. 2, dyag029 . https://doi.org/10.1093/ije/dyag029

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AU - Simoes, Stanley

AU - McAlinden, Michael

AU - Sterling, Charlotte

AU - Potter, Claire

AU - Weir, David R

AU - McGuinness, Bernadette

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