Sleep quality index

Biomarker

2 papers1 finding

  • Humans2

Upstream

1

Female sex

upin humans1

1 study
  1. Female sex increases sleep quality index in humans.

    “Paralleling known N3 patterns, women have significantly higher SQI in all age-groups.”

    Humansclinical home recordingsfemales

    Sex-specific changes and age-specific trends in sleep quality and sleep apnea: Analysis of one-million nights of sleep

    Sleep medicine18 Dec 2025

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Alzheimer's & Dementia

Sleep's link to brain damage varies with other vessel injuries

In an observational study of 735 people, other brain vessel injuries strengthened links between shorter sleep and brain lesions in some diagnostic groups.In an observational study of 735 people, other brain vessel injuries strengthened links between shorter sleep and brain lesions in some diagnostic groups.

Cross-sectional study of 735 peoplePopulations
EClinicalMedicine

Insomnia with sleep apnea linked to higher cardiovascular risk

Participants with both conditions had a hazard ratio—a comparison of event rates over time—of 1.78 for cardiovascular events versus those with neither.Participants with both conditions had a hazard ratio—a comparison of event rates over time—of 1.78 for cardiovascular events versus those with neither.

Cohort study of 1,860 peopleInsomnia