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Factor analysis of objective and subjective characteristics of a night's sleep

Published online by Cambridge University Press:  09 July 2009

M. W. Johns
M. W. Johns
Affiliation:
Medical Research Council Environmental Physiology Unit, London School of Hygiene and Tropical Medicine, London
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Synopsis

Factor analysis was performed on objectively measured and subjectively reported characteristics of 46 nights' sleep in four healthy male subjects. The fragmentation of sleep by awakenings during the night, the delay before falling asleep, the total duration of sleep, and the amount of delta-wave sleep formed the bases of four separate factors.

Type
Preliminary Communication
Information
Psychological Medicine , Volume 5 , Issue 4 , November 1975 , pp. 413 - 418
Copyright
Copyright © Cambridge University Press 1975

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