Sudden Declines in Intelligence in Old Age Predict Death and Dropout From Longitudinal Studies

Bibliographic Data

ID12440966
AuthorsPatrick Rabbitt (University of Oxford, corresponding author), Mary Lunn, D Wong (0000-0002-6794-4466), Mark Cobain (0000-0001-5934-3188)
Year2008
Volume63
Issue4
PagesP205-P211
Publication date2008-07-01
Open AccessNo
TypeARTICLE
VenueThe Journals of Gerontology Series B (JOURNAL)
Journal identifiersISSN: 1079-5014 • E-ISSN: 1758-5368
PublisherOxford University Press (OUP) (PUBLISHER)
DOI10.1093/geronb/63.4.p205
PMID18689761
OpenAlexW1998162381
LanguageEN
Citations received1
References cited26

It is well known that approaching death accelerates cognitive decline. The converse issue, that is, the question of whether rapid declines in cognitive ability are risk factors for imminent death, has not been investigated. Every 4 years between 1983 and 2003, we gave 1,414 healthy community residents who were aged between 49 and 93 years the Heim AH4-1 test of fluid intelligence. A modified Andersen-Gill model evaluated AH4-1 scores at entry to the study and changes in scores between successive quadrennial test sessions as risk factors for death and dropout. Deaths, dropouts, age, gender, occupational categories, and recruitment cohorts were also taken into account. Participants with lower AH4-1 scores on entry were significantly more likely to die or to drop out. At all ages and levels of baseline intelligence, the risks of deaths and dropouts further increased if test scores fell by 10%, and again increased if they fell by 20% during 4-year intervals between successive assessments

Developmental psychology · Dropout (neural networks · Longitudinal data · Longitudinal study · Machine learning · Pathology · Sociology · Computer Science · Dementia and Cognitive Impairment Research · Health, Environment, Cognitive Aging · Insurance, Mortality, Demography, Risk Management · Medicine · Psychology · Demography

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