Articlebronze2013

Development and validation of the J apanese version of the A thens I nsomnia S cale

Isa Okajima · Shun Nakajima · Mina Kobayashi · Yuichi Inoue

317 citations0/0 files storedPsychiatry and Clinical Neurosciences

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Abstract

AIM: The aim of this study was to develop and validate a Japanese version of the Athens Insomnia Scale (AIS-J). METHODS: The AIS-J was created using a back-translation design. A total of 477 outpatients with chronic insomnia and 163 individuals from the general community were recruited. Participants were asked to complete the AIS-J along with two other insomnia scales - Japanese versions of the Pittsburgh Sleep Quality Index and the Insomnia Severity Index. RESULTS: The AIS-J consisted of a two-factor structure: 'nocturnal sleep problem' (items 1-5) and 'daytime dysfunction' (items 6-8). Internal consistencycoefficients ranged from 0.78 to 0.88. Correlations between the AIS-J and the aforementioned authorized scales were 0.81 and 0.85, respectively. Scores on the AIS-J were significantly higher for the insomnia group than for the control group. The AIS-J cut-off value for identifying pathological insomnia was estimated at 6 points or more, and the AIS-J-nocturnal cut-off value was estimated at 4 points or more. CONCLUSIONS: The AIS-J has sufficient validity and diagnostic utility.

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References

1989The Pittsburgh sleep quality index: A new instrument for psychiatric practice and research 2001Validation of the Insomnia Severity Index as an outcome measure for insomnia research 1991The International Classification of Sleep Disorders 2002Epidemiology of insomnia: what we know and what we still need to learn 1989Epidemiologic study of sleep disturbances and psychiatric disorders. An opportunity for prevention?1991The International Classification of Sleep Disorders: Diagnostic and Coding Manual 1989Epidemiologic Study of Sleep Disturbances and Psychiatric Disorders 2000Athens Insomnia Scale: validation of an instrument based on ICD-10 criteria

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