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Factor structure and psychometric properties of the Insomnia Severity Index in Mainland China

We explored the factor structure and psychometric properties of the Insomnia Severity Index (ISI) using 3 samples totaling 2,066 Mainland Chinese undergraduates. All participants completed the ISI and Sample 2 completed 3 other related measures. Their responses were processed using exploratory facto...

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Bibliographic Details
Published in:Social behavior and personality 2018-02, Vol.46 (2), p.209-218
Main Authors: Lin, Rong-Mao, Xie, Shan-Shan, Yan, Wen-Jing, Yan, You-Wei
Format: Article
Language:English
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Summary:We explored the factor structure and psychometric properties of the Insomnia Severity Index (ISI) using 3 samples totaling 2,066 Mainland Chinese undergraduates. All participants completed the ISI and Sample 2 completed 3 other related measures. Their responses were processed using exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and multiple group analyses. The EFA results revealed a 2-factor structure, whereas the CFA results supported a 3-factor solution, the latter of which was further confirmed by the results of multiple group analyses. The Chinese version of the ISI had a satisfactory Cronbach's alpha coefficient of internal reliability, 2-week test-retest reliability, and criterion validity. Overall, we found that the ISI is a reliable, valid, and psychometrically sound measure of insomnia for use with Mainland Chinese undergraduates.
ISSN:0301-2212
1179-6391
DOI:10.2224/sbp.6639