Sleep Med Psychophysiol.  2023 Jun;30(1):22-27. 10.14401/KASMED.2023.30.1.22.

Validation and Reliability of the Sleep Problem Screening Questionnaire: Focusing on Insomnia Symptoms

• Lee J
• Choi S
• Shin H
• Seok J
• Jang S

• KMID: 2544854
• DOI: http://doi.org/10.14401/KASMED.2023.30.1.22

Abstract

Objectives
The purpose of this study was to develop a screening tool that is simple and easy to use for assessing sleep problems, including hypersomnolence, restless legs syndrome, and insomnia. We also examined the reliability and validity of this tool.
Methods
We developed the Sleep Problem Screening Questionnaire (SPSQ), which consists of three sub-sections: insomnia (SPSQi), hypersomnolence (SPSQh), and restless legs syndrome (SPSQr). Subsequently, the participants, consisting of 222 patients with insomnia disorder and 78 healthy individuals, completed both the SPSQ and the comparative scale (Korean version of the Insomnia Severity Index). The analysis was then conducted using this data.
Results
The SPSQ demonstrated good convergent and discriminant validity, as well as satisfactory internal consistency. A cutoff score of 6 on the SPSQi was found to be optimal for distinguishing individuals with insomnia.
Conclusion
The results of this study suggest that the SPSQ is a reliable and valid tool for screening sleep problems among general adult population. However, there is a limitation as a comparison and validation with scales related to restless legs syndrome and hypersomnolence were not conducted.

Keyword

Hypersomnolence; Insomnia; Reliability; Restless legs syndrome (RLS); Validity