This approach distinguishes itself through its comprehensive coverage of both nighttime symptoms and daytime consequences, blending quantitative metrics (sleep latency, total sleep time) with qualitative assessments (satisfaction, soundness). Its prorated scoring method accommodates partial data without sacrificing reliability, and the requirement to preserve item wording enhances consistency across studies. Unlike many proprietary or subscription-based instruments, this scale is openly accessible at no cost to subjects or investigators, fostering broader adoption in clinical and research environments. Its structured, validated design facilitates systematic monitoring of insomnia severity and treatment outcomes across diverse populations.
Description
This 20-item self-administered questionnaire assesses sleep patterns and daytime functioning over seven consecutive days. It comprises three sections: twelve questions on sleep disturbances and daytime impairments rated from 0 (none) to 3 (severe), four categorical items on sleep timing and duration, and four 0–3 scaled items on overall sleep quality and satisfaction. Respondents’ answers are summed to yield a total score from 0 to 80, with a prorated adjustment available if one item is missing. The exact wording and sequencing must remain intact, while minor formatting tweaks (e.g., checkboxes) are permitted. This tool is freely available for noncommercial clinical and research use.
Applications
Digital health app integration
Telemedicine insomnia screening
Pharmaceutical trial participant screening
Corporate wellness sleep assessment
Sleep clinic intake tool
Advantages
Comprehensive assessment of insomnia symptoms, sleep timing, and daytime impairments over a one-week period
Validated 20-item structure with quantitative scoring (0–80) for precise severity measurement and treatment monitoring
Self-administered and time-efficient, requiring minimal clinician involvement
Prorated scoring method accommodates a single missing response without compromising accuracy
Standardized item wording ensures reliability and comparability across studies and clinical settings
Freely available for non-commercial clinical or research use, eliminating cost barriers
IP Status
Copyright
