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Individual validation of model predictions of sleepiness and sleep hours
Stockholm University, Faculty of Social Sciences, Stress Research Institute.
Stockholm University, Faculty of Social Sciences, Stress Research Institute.
Stockholm University, Faculty of Social Sciences, Stress Research Institute.
2007 (Swedish)In: Somnologie, Vol. 11, 169-174 p.Article in journal (Other (popular science, discussion, etc.)) Published
Abstract [sv]

Several mathematical models for prediction of sleepiness have been developed. Few validations on individual levels are available.

Background

The present study was designed to provide validation on the individual level of predictions using the Three Process-Model of alertness regulation. Model predictions of sleep timing were also tested.

Method

Sixteen shift workers participated in the study. Ratings of sleepiness were made every 2h across three shifts. The model was used to predict empirical ratings using as input only information of beginning and end of work shifts, as well as using information on sleep from actigraphs (in a separate analysis).

Results

The prediction using only information on work shifts correlated r=0.55 (p<0.001) with empirical ratings. Predictions were generally within ±1 confidence interval of the ratings. Adding actigraphy sleep data improved predictions marginally. The model predictions of onset and offset of sleep were generally close to the target.

Conclusion

It was concluded that model predictions have a rather high validity both with respect to sleepiness and to sleep timing. It is probable that other information on individual differences will further improve predictability.

Place, publisher, year, edition, pages
2007. Vol. 11, 169-174 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:su:diva-10497DOI: doi:10.1007/s11818-007-0315-7OAI: oai:DiVA.org:su-10497DiVA: diva2:177016
Note
P2630Available from: 2008-01-03 Created: 2008-01-03 Last updated: 2011-01-11Bibliographically approved

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Åkerstedt, TorbjörnAxelsson, JohnKecklund, Göran
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