What question did this study set out to answer?

To examine whether cognitive functioning pervasively or specifically predicts mortality, and to evaluate the confounding role of physical health status on this association.

November 1, 1999American Journal of EpidemiologyOpen Access

Cognitive Functioning and Health as Determinants of Mortality in an Older Population

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Authors

CSC. H. M. SmitsWageningen University & Research DDDorly J. H. DeegBoston University DKDidi M. W. KriegsmanZiekenhuis Amstelland

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Implication

Prospective cohort study reveals specific cognitive domains predict mortality in older adults, indicating distinct prognostic value beyond physical health status.

Key Points

To examine whether cognitive functioning pervasively or specifically predicts mortality, and to evaluate the confounding role of physical health status on this association.
Analyzed data from 2,380 participants aged 55–85 years from the Longitudinal Aging Study Amsterdam in the Netherlands.
Assessed five cognitive domains: general cognitive functioning, information processing speed, fluid intelligence, learning, and proportion retained.
Evaluated mortality over an average follow-up of 1,215 days using Cox proportional hazards regression adjusting for demographics, depressive symptoms, and physical health markers.
All five cognitive domains significantly predicted mortality after adjusting for age, sex, education, and depressive symptoms.
Following additional adjustment for comprehensive health indicators (chronic diseases, medication use, physical performance, functional limitations, and lung function), information processing speed, fluid intelligence, and proportion retained remained independent predictors of mortality.
General cognitive functioning and learning lost their statistical ability to predict mortality once physical health variables were incorporated into the models.

Cite This Study

Smits et al. (1999) studied this question.

synapsesocial.com/papers/6a701e92e71d69abee0862ce https://doi.org/10.1093/oxfordjournals.aje.a010107

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Implication

Prospective cohort study reveals specific cognitive domains predict mortality in older adults, indicating distinct prognostic value beyond physical health status.

Cognitive Functioning and Health as Determinants of Mortality in an Older Population

Discussion

Member takes

Implication

Key Points

Cite This Study

Cognitive Functioning and Health as Determinants of Mortality in an Older Population

Discussion

Member takes

Implication

Key Points

Cite This Study

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