Cited by 449Sleep and related disordersCancer survivorship and careSleep and Work-Related Fatigue

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Empirical validation of the Insomnia Severity Index in cancer patients: INSOMNIA SEVERITY INDEX AND CANCER

Savard, Marie-Hélène, Savard, Josée, Simard, Sébastien, Ivers, Hans·2005·Psycho-Oncology

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Abstract

Despite the elevated prevalence of insomnia in cancer patients, there is a lack of brief validated instruments for the evaluation of this particular problem in this population. The goal of this study is to empirically validate the Insomnia Severity Index (ISI) and to evaluate its ability to screen insomnia in 1670 cancer patients. The results support the internal consistency and temporal stability of the ISI. Its two-component factor structure is clear and stable between different cancer diagnoses. The construct validity of that instrument is also supported by correlations obtained with various measures of sleep and one measure of quality of life. The ISI is also sensitive to therapeutic changes. A clinical cut-off score of 8 on the ISI is associated with optimal sensitivity and specificity for the detection of sleep difficulties. In conclusion, the ISI appears to be an excellent evaluation and screening tool in the context of cancer.

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Authors: Savard, M.-H., Savard, J., Simard, S., & Ivers, H.
Affiliations: Université Laval (CA)
Corresponding author: Savard, Josée
ORCID: Savard, Josée
Simard, Sébastien
Ivers, Hans
Venue: Psycho-Oncology
Publisher: Wiley
Published: 2004-09-16
Volume: 14
Issue: 6
Pages: 429-441
ISSN: 1057-9249 (ISSN-L)
DOI: 10.1002/pon.860
OpenAlex: W2024600214
Cited by: 449
References: 38
Citations by year: 2026: 14 · 2025: 36 · 2024: 30 · 2023: 23 · 2022: 44 · 2021: 46 · 2020: 33 · 2019: 26 · 2018: 24 · 2017: 23 · 2016: 28 · 2015: 18 · 2014: 24 · 2013: 18 · 2012: 18
FWCI: 3.80
Type: journal article
Language: en
Open access: closed
Licence: doi.wiley.com/10.1002/tdm_license_1.1 (tdm)
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Locations: Psycho-Oncology (publishedVersion)
PubMed (publishedVersion)
Constellation (Université du Québec à Chicoutimi) (acceptedVersion)
Funders: Université Laval
Canadian Institutes of Health Research
Topics: Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Health Sciences › Medicine › Oncology › Cancer survivorship and care
Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
Keywords: Insomnia Severity Index, insomnia, cancer patients, sleep disorders, screening tool validation, factor structure, construct validity, internal consistency, temporal stability, quality of life, cut-off values
MeSH terms: Adult, Aged, Aged, 80 and over, Female, Humans, Sleep Initiation and Maintenance Disorders, Male, Middle Aged, Neoplasms, Quality of Life, Sensitivity and Specificity, Severity of Illness Index

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Empirical validation of the Insomnia Severity Index in cancer patients: INSOMNIA SEVERITY INDEX AND CANCER

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