Re-examining the factor structure of the Insomnia Severity Index (ISI) and defining the meaningful within-individual change (MWIC) for subjects with insomnia disorder in two phase III clinical trials of the efficacy of lemborexant

• Main Authors: William R. Lenderking (Author), Yulia Savva (Author), Mark J. Atkinson (Author), Renee Campbell (Author), Isabelle Chabot (Author), Margaret Moline (Author), Genevieve Meier (Author), Charles M. Morin (Author)
• Format: Book
• Published: SpringerOpen, 2024-06-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Abstract Background The Insomnia Severity Index (ISI) is a widely used measure of insomnia severity. Various ISI research findings suggest different factor solutions and meaningful within-individual change (MWIC) to detect treatment response in patients with insomnia. This study examined an ISI fact...