Psychometric properties of the Insomnia Severity Index for people with chronic obstructive pulmonary disease

Sleep Medicine（2022）

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摘要

•The Insomnia Severity Index (ISI) has good internal consistency reliability.•A single factor in the ISI accounted for 45.6% of the variance.•The factor structure showed that the ISI has good construct validity.•The ISI total score was associated with fatigue, anxiety, depression, and dyspnea.

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关键词

Chronic obstructive pulmonary disease,Insomnia,Validity,Reliability,Factor analysis,Insomnia Severity Index

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