Reliability and external validity of the six scales of 72-item Sleep-Wake Pattern Assessment Questionnaire (SWPAQ)
The 72-item Sleep-Wake Pattern Assessment Questionnaire (SWPAQ) provides possibility to self-assess individual variation along as many as 6 factorial dimensions. We examined reliability and external validity of each of its 12-item scales, E, M, W, V, F, and S (evening and morning lateness, anytime a...
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