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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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Updated: Jan 7, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
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Public Health.

Kevin A Gonzalez1, Rachel Membreno2, Wassim Tarraf3

  • 1University of California, San Diego, La Jolla, CA, USA.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 23, 2025
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Summary
This summary is machine-generated.

Disturbed sleep and daytime sleepiness are linked to increased subjective cognitive decline (SCD) in Hispanic/Latino adults. These sleep phenotypes may help identify individuals at risk for cognitive issues.

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Area of Science:

  • Sleep Science
  • Cognitive Neurology
  • Public Health

Background:

  • Sleep problems are associated with cognitive decline, a precursor to dementia.
  • Phenotype-based approaches are increasingly used in sleep research due to symptom heterogeneity.
  • The relationship between sleep phenotypes and subjective cognitive decline (SCD) in diverse populations needs further investigation.

Purpose of the Study:

  • To examine the association between sleep phenotypes and subjective cognitive decline (SCD) in a large cohort of Hispanic/Latino individuals.
  • To identify specific sleep patterns linked to cognitive health within this demographic.

Main Methods:

  • Utilized data from the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) and its ancillary study, SOL-INCA.
  • Employed latent class analysis on 15 sleep variables and 4 cardiovascular measures to define sleep phenotypes.
  • Assessed SCD using the Everyday Cognition (ECog-12) scale and analyzed associations with sleep phenotypes via survey-weighted linear regression.

Main Results:

  • A three-class solution identified distinct sleep phenotypes: disturbed sleep, daytime sleepiness, and minimally symptomatic.
  • Individuals in the disturbed sleep (N=1,886) and daytime sleepiness (N=943) groups reported significantly more SCD across all cognitive domains compared to the minimally symptomatic group (N=2,722).
  • These associations persisted after adjusting for covariates.

Conclusions:

  • Both disturbed sleep and daytime sleepiness phenotypes are significantly associated with increased subjective cognitive decline (SCD).
  • Sleep phenotype approaches may offer valuable insights into cognitive health, particularly within Hispanic/Latino populations.
  • Findings highlight the importance of addressing sleep disturbances for maintaining cognitive function.