Papers on the topic of wearables

The list below might serve as a good starting point for starting your reading about the accuracy of wearables used with Cozie.

• The accuracy of Apple Watch measurements: a living systematic review and meta-analysis
  Lambe, R., Baldwin, M., O’Grady, B., Schumann, M., Caulfield, B., & Doherty C.,
  (2026). . npj Digital Medicine, 9(1), 63.
  https://www.nature.com/articles/s41746-025-02238-1
  

• Apple Watch Heart Rate Accuracy Study
  Apple Inc.
  (2026)
  https://www.apple.com/health/pdf/Heart_Rate_Accuracy_Study_2026.pdf
  

• Estimating Sleep Stages from Apple Watch
  Apple Inc.
  (2025)
  https://www.apple.com/health/pdf/Estimating_Sleep_Stages_from_Apple_Watch_Oct_2025.pdf