Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder
Objective The Sleep Condition Indicator (SCI) and Insomnia Severity Index (ISI) are commonly used instruments to assess insomnia. We evaluated their psychometric properties, particularly their discriminant validity against structured clinical interview (according to DSM-5 and ICSD-3), and their conc...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal article |
| Published: |
Elsevier
2016
|
| _version_ | 1797071813454331904 |
|---|---|
| author | Wong, M Lau, K Espie, C Luik, A Kyle, S Lau, E |
| author_facet | Wong, M Lau, K Espie, C Luik, A Kyle, S Lau, E |
| author_sort | Wong, M |
| collection | OXFORD |
| description | Objective The Sleep Condition Indicator (SCI) and Insomnia Severity Index (ISI) are commonly used instruments to assess insomnia. We evaluated their psychometric properties, particularly their discriminant validity against structured clinical interview (according to DSM-5 and ICSD-3), and their concurrent validity with measures of sleep and daytime functioning. Methods A total of 158 young adults, 16% of whom were diagnosed with DSM-5 insomnia disorder and 13% with ICSD-3 Chronic Insomnia by structured interview, completed the ISI and SCI twice in 7–14 days, in addition to measures of sleep and daytime function. Results The Chinese version of the SCI was validated with good psychometric properties (ICC = 0.882). A cutoff of ≥8 on the ISI, ≤5 on the SCI short form, and ≤21 on the SCI achieved high discriminant validity (AUC > 0.85) in identifying individuals with insomnia based on both DSM-5 and ICSD-3 criteria. The SCI and ISI had comparable associations with subjective (0.18 < r < 0.51) and actigraphic sleep (0.31 < r < 0.43) and daytime functioning (0.34 < r < 0.53). Conclusion The SCI, SCI short form, and ISI were found to correctly identify individuals with DSM-5- and ICSD-3-defined insomnia disorder. Moreover, they showed good concordance with measures of daytime dysfunction, as well as subjective and objective sleep. The SCI and ISI are recommended for use in clinical and research settings. |
| first_indexed | 2024-03-06T22:58:38Z |
| format | Journal article |
| id | oxford-uuid:614cb921-3845-41f4-99ce-87bac6944c3c |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:58:38Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:614cb921-3845-41f4-99ce-87bac6944c3c2022-03-26T17:58:57ZPsychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorderJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:614cb921-3845-41f4-99ce-87bac6944c3cSymplectic Elements at OxfordElsevier2016Wong, MLau, KEspie, CLuik, AKyle, SLau, EObjective The Sleep Condition Indicator (SCI) and Insomnia Severity Index (ISI) are commonly used instruments to assess insomnia. We evaluated their psychometric properties, particularly their discriminant validity against structured clinical interview (according to DSM-5 and ICSD-3), and their concurrent validity with measures of sleep and daytime functioning. Methods A total of 158 young adults, 16% of whom were diagnosed with DSM-5 insomnia disorder and 13% with ICSD-3 Chronic Insomnia by structured interview, completed the ISI and SCI twice in 7–14 days, in addition to measures of sleep and daytime function. Results The Chinese version of the SCI was validated with good psychometric properties (ICC = 0.882). A cutoff of ≥8 on the ISI, ≤5 on the SCI short form, and ≤21 on the SCI achieved high discriminant validity (AUC > 0.85) in identifying individuals with insomnia based on both DSM-5 and ICSD-3 criteria. The SCI and ISI had comparable associations with subjective (0.18 < r < 0.51) and actigraphic sleep (0.31 < r < 0.43) and daytime functioning (0.34 < r < 0.53). Conclusion The SCI, SCI short form, and ISI were found to correctly identify individuals with DSM-5- and ICSD-3-defined insomnia disorder. Moreover, they showed good concordance with measures of daytime dysfunction, as well as subjective and objective sleep. The SCI and ISI are recommended for use in clinical and research settings. |
| spellingShingle | Wong, M Lau, K Espie, C Luik, A Kyle, S Lau, E Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder |
| title | Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder |
| title_full | Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder |
| title_fullStr | Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder |
| title_full_unstemmed | Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder |
| title_short | Psychometric properties of the Sleep Condition Indicator and Insomnia Severity Index in the evaluation of insomnia disorder |
| title_sort | psychometric properties of the sleep condition indicator and insomnia severity index in the evaluation of insomnia disorder |
| work_keys_str_mv | AT wongm psychometricpropertiesofthesleepconditionindicatorandinsomniaseverityindexintheevaluationofinsomniadisorder AT lauk psychometricpropertiesofthesleepconditionindicatorandinsomniaseverityindexintheevaluationofinsomniadisorder AT espiec psychometricpropertiesofthesleepconditionindicatorandinsomniaseverityindexintheevaluationofinsomniadisorder AT luika psychometricpropertiesofthesleepconditionindicatorandinsomniaseverityindexintheevaluationofinsomniadisorder AT kyles psychometricpropertiesofthesleepconditionindicatorandinsomniaseverityindexintheevaluationofinsomniadisorder AT laue psychometricpropertiesofthesleepconditionindicatorandinsomniaseverityindexintheevaluationofinsomniadisorder |