ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2021
The Hypersomnia Severity Index: reliability, construct, and criterion validity in a clinical sample of patients with sleep disorders.
Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 20 citations in OpenAlex.
- A study on electroretinography as a biomarker for seasonal vulnerability in depression.Translational psychiatry · 2025Article
- Sleep effort and its measurement: A scoping review.Journal of sleep research · 2024Article
- Validation and performance of the sleep inertia questionnaire in central disorders of hypersomnolence.Sleep medicine · 2024Article
- Idiopathic Hypersomnia-A Dynamic Simulation Model.Frontiers in neurology · 2022Article
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Authors and funding
7 authors at 3 institutions in 1 country.
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Abstract
STUDY
objectivesThe Hypersomnia Severity Index (HSI) was designed to assess the severity and impairment of hypersomnolence and has been validated in persons with psychiatric disorders. Little is known about its psychometric properties in clinical samples of patients with sleep disorders.
methodsOne hundred fifty-eight patients (aged 44.1 ± 16.4 years, 29.1% male, 19.6% racial/ethnic minority) evaluated at the Behavioral Sleep Medicine program of the Penn State Health Sleep Research and Treatment Center completed the HSI and other patient-reported outcomes. We examined the HSI's reliability and factorial, construct, and criterion validity.
resultsThe HSI showed satisfactory internal consistency (α = 0.79). A 2-factor structure, reflecting symptoms (HSI-S) and impairment, explained 56.2% of the variance. Convergent validity with the Epworth Sleepiness Scale was optimal (
conclusionsThe HSI shows satisfactory indices of reliability and validity in a clinical patient sample. Its construct and criterion validity are supported by its divergent association with other patient-reported outcomes and central disorders of hypersomnolence vs chronic insomnia disorder diagnoses and the adequate sensitivity/specificity of its HSI-S cutoff score to reliably identify central disorders of hypersomnolence. CITATION: Fernandez-Mendoza J, Puzino K, Amatrudo G, et al. The Hypersomnia Severity Index: reliability, construct, and criterion validity in a clinical sample with sleep disorders.
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