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Primary care promotes wellness and prevents disease. This care includes health promotion, education, protection (such as immunizations), early disease screening, and environmental considerations. Settings providing this type of healthcare include physician offices, public health clinics, school nursing, and community health nursing.
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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Public Health.

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  • 1University of Miami Miller School of Medicine, Miami, FL, USA.

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Summary
This summary is machine-generated.

Paranoid delusions partially explain why depression leads to poorer cognitive function. Targeting delusions may improve cognitive outcomes in depressed individuals.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Gerontology

Background:

  • Psychotic symptoms, including delusions, are common in Alzheimer's disease and depression, often linked to worse patient outcomes.
  • Cognitive Load Theory suggests depression impairs cognition through rumination, depleting mental resources.
  • The mediating role of delusions between depression and cognitive decline is not well understood.

Purpose of the Study:

  • To investigate the mediating role of paranoid delusions in the association between depression severity and cognitive outcomes.
  • To analyze data from the National Alzheimer's Coordinating Center (NACC) for insights into this relationship.

Main Methods:

  • Utilized NACC data from 14,588 participants (March 2015-Dec 2024).
  • Assessed cognitive function using the Montreal Cognitive Assessment (MoCA).
  • Measured depression and paranoid delusion severity using proxy-reported and self-reported scales, respectively; employed structural equation modeling (SEM) for analysis, adjusting for numerous covariates.

Main Results:

  • Higher depression severity correlated with increased delusion prevalence (p < 0.001).
  • Depression severity was directly linked to poorer cognitive outcomes (p < 0.001) and indirectly through delusions (p < 0.001).
  • Delusions accounted for 19.3% of the total effect of depression on cognitive outcomes, with the SEM model showing excellent fit.

Conclusions:

  • Poorer cognitive outcomes in depressed individuals are partly mediated by delusions.
  • Further prospective studies are needed to confirm these findings.
  • Interventions targeting delusions could potentially enhance cognitive function in patients with depression.