The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.
Validation study of the Italian version of the Insomnia Severity Index (ISI)
Abstract
To test the factorial structure of the Italian version of the Insomnia Severity Index (ISI) using a confirmatory approach and to assess its psychometric properties. ISI questionnaire was completed by 272 patients (average age 41.28, range 18-73) with insomnia diagnosis performed by a sleep medicine physician and retrospectively enrolled in the study. All patients underwent Cognitive Behavioral Treatment for Insomnia (CBT-I) and completed sleep diaries before starting the treatment. Data from sleep diaries were analyzed for assessing concurrent validity of the ISI. Confirmatory factor analysis (CFA) for ordinal Likert-type items was applied to compare four competing models proposed in the literature. 244 patients, out of the 272, completed the ISI at the end of CBT-I. A comparison of ISI score before and after treatment was performed. The CFA analysis confirmed the presence of three main factors conceptualized as severity and impact of the disease along with sleep satisfaction. Significant correlations of the first three items of the questionnaire, investigating three different subtypes of insomnia, and the subjective measures from the sleep diaries were found, thus supporting the concurrent validity of the test. Sleep efficiency (SE) had a significant inverse correlation with the severity and satisfaction factors and with ISI's total score. After CBT-I treatment, a significant reduction of ISI's scores was observed, thus confirming the effectiveness of the CBT-I treatment. The internal reliability coefficient was 0.75. The ISI questionnaire maintains good psychometric properties in the Italian version, thus confirming that this instrument is reliable for detecting insomnia severity and identifying patients' symptoms.
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“Symptoms of insomnia were assessed using the insomnia severity index (ISI), which has adequate internal consistency (Cronbach’s α = 0.74) [24,25].”
From Anxiety, depression and risk of post-traumatic stress disorder in health workers: the relationship with burnout during COVID-19 pandemic in Italy (2021) · cites this paper as [25]
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Self-citationMeasuring Subjective Sleep Quality: A Review
Fabbri, M., Beracci, A., Martoni, M., Meneo, D., Tonetti, L., & Natale, V. (2021) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph18031082 · Cited by 660
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Manzar, M. D., Jahrami, H. A., & Bahammam, A. S. (2021) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2021.101531 · Cited by 138
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Palagini, L., Moretto, U., Dell’Osso, L., & Carney, C. E. (2016) · Sleep Medicine · doi:10.1016/j.sleep.2016.11.004 · Cited by 127
Metadata
- Authors
- Castronovo, V., Galbiati, A., Marelli, S., Brombin, C., Cugnata, F., Giarolli, L., Anelli, M. M., Rinaldi, F., & Ferini-Strambi, L.
- Affiliations
- Vita-Salute San Raffaele University (IT)
- Venue
- Neurological Sciences
- Published
- 2016-05-27
- Volume
- 37
- Issue
- 9
- Pages
- 1517-1524
- ISSN
- 1590-1874 (ISSN-L)
- 1590-3478
- OpenAlex
- W2407866264
- Cited by
- 217
- References
- 36
- Citations by year
- 2026: 25 · 2025: 31 · 2024: 27 · 2023: 33 · 2022: 21 · 2021: 33 · 2020: 22 · 2019: 9 · 2018: 11 · 2017: 4 · 2016: 1
- FWCI
- 11.83
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Neurological Sciences (publishedVersion)
- PubMed (publishedVersion)
- Archivio Istituzionale della Ricerca - Università Vita-Salute San Raffaele (submittedVersion)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Health Sciences › Medicine › Physiology (medical) › Obstructive Sleep Apnea Research
- Keywords
- Insomnia Severity Index, Italian adaptation, insomnia severity, psychometric validation, sleep diary, concurrent validity, factor structure, sleep efficiency, sleep satisfaction, internal consistency
- MeSH terms
- Adolescent, Adult, Aged, Factor Analysis, Statistical, Female, Humans, Sleep Initiation and Maintenance Disorders, Italy, Male, Middle Aged, Psychometrics, Retrospective Studies, Severity of Illness Index, Translating, Reproducibility of Results, Cognitive Behavioral Therapy, Outcome Assessment, Health Care, Young Adult
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