C R Soldatos1, D G Dikeos, T J Paparrigopoulos. 1. Sleep Research Unit, Department of Psychiatry, Athens University Medical School, Athens, Greece. egslelabath@hol.gr
Abstract
OBJECTIVES: To describe and validate the Athens Insomnia Scale (AIS). METHODS: The AIS is a self-assessment psychometric instrument designed for quantifying sleep difficulty based on the ICD-10 criteria. It consists of eight items: the first five pertain to sleep induction, awakenings during the night, final awakening, total sleep duration, and sleep quality; while the last three refer to well-being, functioning capacity, and sleepiness during the day. Either the entire eight-item scale (AIS-8) or the brief five-item version (AIS-5), which contains only the first five items, can be utilized. The validation of the AIS was based on its administration to 299 subjects: 105 primary insomniacs, 144 psychiatric patients and 50 non-patient controls. RESULTS: Regarding internal consistency, for both versions of the scale, the Cronbach's alpha was around 0. 90 and the mean item-total correlation coefficient was about 0.70. Moreover, in the factor analysis, the scale emerged as a sole component. The test-retest reliability correlation coefficient was found almost 0.90 at a 1-week interval. As far as external validity is concerned, the correlations of the AIS-8 and AIS-5 with the Sleep Problems Scale were 0.90 and 0.85, respectively. CONCLUSION: The high measures of consistency, reliability, and validity of the AIS make it an invaluable tool in sleep research and clinical practice.
OBJECTIVES: To describe and validate the Athens Insomnia Scale (AIS). METHODS: The AIS is a self-assessment psychometric instrument designed for quantifying sleep difficulty based on the ICD-10 criteria. It consists of eight items: the first five pertain to sleep induction, awakenings during the night, final awakening, total sleep duration, and sleep quality; while the last three refer to well-being, functioning capacity, and sleepiness during the day. Either the entire eight-item scale (AIS-8) or the brief five-item version (AIS-5), which contains only the first five items, can be utilized. The validation of the AIS was based on its administration to 299 subjects: 105 primary insomniacs, 144 psychiatricpatients and 50 non-patient controls. RESULTS: Regarding internal consistency, for both versions of the scale, the Cronbach's alpha was around 0. 90 and the mean item-total correlation coefficient was about 0.70. Moreover, in the factor analysis, the scale emerged as a sole component. The test-retest reliability correlation coefficient was found almost 0.90 at a 1-week interval. As far as external validity is concerned, the correlations of the AIS-8 and AIS-5 with the Sleep Problems Scale were 0.90 and 0.85, respectively. CONCLUSION: The high measures of consistency, reliability, and validity of the AIS make it an invaluable tool in sleep research and clinical practice.
Authors: Katalin Fornadi; Anett Lindner; Maria E Czira; Andras Szentkiralyi; Alpar S Lazar; Rezso Zoller; Csilla Z Turanyi; Orsolya Veber; Marta Novak; Istvan Mucsi; Miklos Z Molnar Journal: Int Urol Nephrol Date: 2011-12-06 Impact factor: 2.370
Authors: A Roebuck; V Monasterio; E Gederi; M Osipov; J Behar; A Malhotra; T Penzel; G D Clifford Journal: Physiol Meas Date: 2013-12-17 Impact factor: 2.833
Authors: David J Allsop; Delwyn J Bartlett; Jennifer Johnston; David Helliwell; Adam Winstock; Iain S McGregor; Nicholas Lintzeris Journal: J Clin Sleep Med Date: 2015-10-15 Impact factor: 4.062