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April 16, 2026Life0 citationsOpen Access

Interrater Reliability in Polysomnography Scoring Across Clinical Subgroups

Analysis of Interrater Reliability and Interpretive Discrepancies in Polysomnography Scoring Across Clinical Subgroups

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Authors

JCJi Ho ChoiTHTae Kyoung HaJMJi Eun Moon

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Overview

Retrospective analysis examines scoring agreement in sleep studies, revealing variability in complex cases like severe OSA.

Key Points

  • The study aims to assess the level of agreement among multiple scorers of polysomnography data across different clinical conditions.
  • Conducted a retrospective analysis of PSG data from adult patients at a university hospital sleep center
  • Evaluated interrater reliability using three expert scorers for 30 selected subjects
  • Scored polysomnographic data according to American Academy of Sleep Medicine criteria focusing on specific sleep parameters
  • Measured interrater agreement using Fleiss’ κ and performed subgroup analyses by diagnosis.
  • Overall interrater agreement for sleep staging was nearly perfect (Fleiss’ κ = 0.932)
  • Highest concordance was observed in stages W, N2, and R, and excellent in stages N1 and N3
  • Near-perfect agreement for apnea (κ = 0.955) and substantial for hypopnea, arousals, and PLMs
  • Variability was noted, especially for arousal detection between different scorers, particularly in severe OSA cases.

Cite This Study

Choi et al. (2026) studied this question.

synapsesocial.com/papers/69e07d3c2f7e8953b7cbe51dhttps://doi.org/10.3390/life16040669
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