abd (version 0.1-22)

JetLagKnees: Circadian Rhythm Phase Shift

Description

Shift in circadian rhythm (hours; shift) in three light treatments (treatment).

Usage

data(JetLagKnees)

source

inferred from Wright, K.P., Jr. and C.A. Czeisler 2002. Absence of circadian phase resetting in response to bright light behind the knees. Science 297: 571.

References

http://www.sciencemag.org/cgi/content/full/297/5581/571

Examples

data(JetLagKnees)
JetLagKnees
str(JetLagKnees)

# since data set is small, no need to summarize
xyplot(shift ~ treatment, data = JetLagKnees)
bwplot(shift ~ treatment, data = JetLagKnees)