Heart rate circadian phase and hyperarousal as wearable digital phenotyping of insomnia: An interpretable machine learning study - Scorecard - MDSpire

Heart rate circadian phase and hyperarousal as wearable digital phenotyping of insomnia: An interpretable machine learning study

  • By

  • Minji Kim

  • Seojin Yun

  • Hyungju Kim

  • Emma Matsushita

  • Ji Won Yeom

  • Sujin Kim

  • Seung Pil Pack

  • Heon-Jeong Lee

  • Taesu Cheong

  • Chul-Hyun Cho

  • June 6, 2026

  • 0 min

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Clinical Scorecard: Circadian Heart Rate Patterns and Hyperarousal as Indicators of Insomnia: Insights from an Interpretable Machine Learning Analysis Using Wearable Technology

At a Glance

CategoryDetail
ConditionInsomnia
Key MechanismsWearable technology and machine learning for objective sleep assessment.
Target PopulationAdults aged 19–70 years with insomnia symptoms.
Care SettingSingle-center observational study at Korea University Anam Hospital.

Key Highlights

  • Insomnia affects approximately 10–30% of the population.
  • 249 participants classified as insomnia group based on ISI scores.
  • Wearable devices recorded heart rate and sleep metrics continuously.
  • Study emphasizes clinical plausibility in machine learning model selection.

Guideline-Based Recommendations

Diagnosis

  • Use Insomnia Severity Index (ISI) scores for classification.

Management

  • Integrate clinical plausibility in machine learning model evaluation.

Monitoring & Follow-up

  • Utilize wearable devices for continuous monitoring of sleep metrics.

Risks

  • Potential for spurious associations in machine learning outputs.

Patient & Prescribing Data

Participants aged 19–70 years with insomnia symptoms.

Focus on clinically relevant insomnia symptoms, including subthreshold insomnia.

Clinical Best Practices

  • Incorporate explainability in AI-assisted decision making.
  • Ensure transparency in model outputs and validation criteria.

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