TY  - JOUR
PY  - 2013//
TI  - Development and validation of the Japanese version of the Athens Insomnia Scale
JO  - Psychiatry and the Clinical Neurosciences
A1  - Okajima, Isa
A1  - Nakajima, Shun
A1  - Kobayashi, Mina
A1  - Inoue, Yuichi
SP  - 420
EP  - 425
VL  - 67
IS  - 6
N2  - 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.<p />  <p>Language: en</p>
LA  - en
SN  - 1323-1316
UR  - http://dx.doi.org/10.1111/pcn.12073
ID  - ref1
ER  -