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Where can you download the karolinska and Stanford sleepiness scales?
Wiki User
∙ 10y ago
karolinska sleepiness scale
Wiki User
∙ 10y ago
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What are the psychometric properties of the Karolinska Sleepiness Scale such as figures of validity and reliability?
First of all, it seems difficult to infer on reliability in the sense of test-retest reliability as the KSS is a measure of situational sleepiness. This means that scores fluctuate according to prior sleep, time of day, etc. and it is virtually impossible to create the exact same test conditions to evaluate reliability. However, in terms of reliability to an underlying model (cfr. multi-facet rasch model), an unpublished studies suggested good reliability and near-interval measurement properties. Several validity studies have been published (e.g. Validation of the Karolinska sleepiness scale against performance and EEG variables . Clinical Neurophysiology , Volume 117 , Issue 7 , Pages 1574 - 1581 K . Kaida , M . Takahashi , T . Åkerstedt , A . Nakata , Y . Otsuka , T . Haratani , K . Fukasawa) suggesting good agreement of KSS data and other measurements. A study using functional measurement methodology (On the linearity of subjective sleepiness scales by Mairesse, Hofmans, De Valck, Cluydts & Theuns (2007) in Teorie & Modelli) further validates the KSSas a linear response measure.
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