horm.cort: Hormone Measurements of Cortisol
In assist: A Suite of R Functions Implementing Spline Smoothing Techniques
horm.cort R Documentation
Hormone Measurements of Cortisol
Description
The horm.cort data frame has 425 rows and 4 columns of data representing measurement of cortisol on 36 individuals.
Usage
data(horm.cort)
Format
The data frame contains the following columns:
ID a vector of index indicating individuals on whom measures were made.
time a numeric vector of time points of every 2 hours in 24 hours. The time is scaled into [0, 1].
type a vector of character strings identifying the groups, "normal", "depressed", or "cushing", which the individuals belong to.
conc cortisol concentration measurements in log10 scale.
Details
Blood samples were collected every 2 hours for 24 hours from three group of healthy normal volunteers and volunteers with depresession and suchsing syndrome. They were analyzed for parameters that measure hormones of the hypothalamic-pituitary axix. Human circadian thythm is one of the research objective. In this data set, only measurements of cortisol concetration were included.
Source
This data set was extracted from a stress study conducted in the medical center of the University of Michigan.
References
Wang, Y. and Brown, M. B. (1996). A Flexible Model for Human Circadian Rhythms. Biometrics 52, 588-596.
Yuedong Wang, Chunlei Ke and Morton B. Brown (2003), Shape Invariant Modelling of Circadian Rhythms with Random Effects and Smoothing Spline ANOVA Decompositions. Biometrics, 59:804-812.
assist documentation built on Aug. 22, 2023, 9:12 a.m.
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| horm.cort | R Documentation |
Hormone Measurements of Cortisol
Description
The horm.cort data frame has 425 rows and 4 columns of data representing measurement of cortisol on 36 individuals.
Usage
data(horm.cort)
Format
The data frame contains the following columns:
ID a vector of index indicating individuals on whom measures were made.
time a numeric vector of time points of every 2 hours in 24 hours. The time is scaled into [0, 1].
type a vector of character strings identifying the groups, "normal", "depressed", or "cushing", which the individuals belong to.
conc cortisol concentration measurements in log10 scale.
Details
Blood samples were collected every 2 hours for 24 hours from three group of healthy normal volunteers and volunteers with depresession and suchsing syndrome. They were analyzed for parameters that measure hormones of the hypothalamic-pituitary axix. Human circadian thythm is one of the research objective. In this data set, only measurements of cortisol concetration were included.
Source
This data set was extracted from a stress study conducted in the medical center of the University of Michigan.
References
Wang, Y. and Brown, M. B. (1996). A Flexible Model for Human Circadian Rhythms. Biometrics 52, 588-596.
Yuedong Wang, Chunlei Ke and Morton B. Brown (2003), Shape Invariant Modelling of Circadian Rhythms with Random Effects and Smoothing Spline ANOVA Decompositions. Biometrics, 59:804-812.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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