Evaluation of Severity Levels of the Athens Insomnia Scale Based on the Criterion of Insomnia Severity Index

Isa Okajima, Towa Miyamoto, Ayaka Ubara, Chie Omichi, Arichika Matsuda, Yukiyoshi Sumi, Masahiro Matsuo, Kazuki Ito and Hiroshi Kadotani
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Isa Okajima: Department of Psychological Counseling, Faculty of Humanities, Tokyo Kasei University, Tokyo 173-8602, Japan
Towa Miyamoto: Department of Psychiatry, Shiga University of Medical Science, Shiga 520-2192, Japan
Ayaka Ubara: Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
Chie Omichi: Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
Arichika Matsuda: Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
Yukiyoshi Sumi: Department of Psychiatry, Shiga University of Medical Science, Shiga 520-2192, Japan
Masahiro Matsuo: Department of Psychiatry, Shiga University of Medical Science, Shiga 520-2192, Japan
Kazuki Ito: Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan
Hiroshi Kadotani: Department of Sleep and Behavioral Sciences, Shiga University of Medical Science, Shiga 520-2192, Japan

IJERPH, 2020, vol. 17, issue 23, 1-9

Abstract: The Athens Insomnia Scale (AIS) can be regarded as a highly useful instrument in both clinical and research settings, except for when assessing the severity level. This study aims to determine the severity criteria for AIS by using the Insomnia Severity Index (ISI). A total of 1666 government employees aged 20 years or older were evaluated using the AIS and ISI, the Patient Health Questionnaire for depressive symptoms, the Epworth Sleepiness Scale for daytime sleepiness, and the Short Form Health Survey of the Medical Outcomes Study for health-related quality of life (QoL). A significant positive correlation ( r ) was found between the AIS and the ISI ( r = 0.80, p < 0.001). As a result of describing receiver–operator curves, the severity criteria of the AIS are capable of categorizing insomnia severity as follows: absence of insomnia (0–5), mild insomnia (6–9), moderate insomnia (10–15), and severe insomnia (16–24). In addition, compared to all scales across groups categorized by AIS or ISI, it was revealed that similar results could be obtained (all p < 0.05). Therefore, the identification of the severity of AIS in this study is important in linking the findings of epidemiological studies with those of clinical studies.

Keywords: Athens Insomnia Scale; Insomnia Severity Index; depression; quality of life; cutoff; sleepiness (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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