case1102: The Blood-Brain Barrier
In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"
case1102 R Documentation
The Blood–Brain Barrier
Description
The human brain is protected from bacteria and toxins, which course
through the blood–stream, by a single layer of cells called the
blood–brain barrier. These data come from an experiment (on rats,
which possess a similar barrier) to study a method of disrupting the
barrier by infusing a solution of concentrated sugars.
Usage
case1102
Format
A data frame with 34 observations on the following 9 variables.
BrainBrain tumor count (per gm)
LiverLiver count (per gm)
TimeSacrifice time (in hours)
TreatTreatment received
DaysDays post inoculation
SexSex of the rat
WeightInitial weight (in grams)
LossWeight loss (in grams)
TumorTumor weight (in 10^{-4} grams)
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A
Course in Methods of Data Analysis (2nd ed), Duxbury.
Examples
str(case1102)
plot(Brain/Liver ~ Time, case1102, log="xy", pch=ifelse(Treat=="BD", 19,21))
legend(10,0.1, pch=c(19,21), c("Saline control", "Barrier disruption"))
Sleuth2 documentation built on Jan. 25, 2024, 3:02 p.m.
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| case1102 | R Documentation |
The Blood–Brain Barrier
Description
The human brain is protected from bacteria and toxins, which course through the blood–stream, by a single layer of cells called the blood–brain barrier. These data come from an experiment (on rats, which possess a similar barrier) to study a method of disrupting the barrier by infusing a solution of concentrated sugars.
Usage
case1102Format
A data frame with 34 observations on the following 9 variables.
BrainBrain tumor count (per gm)
LiverLiver count (per gm)
TimeSacrifice time (in hours)
TreatTreatment received
DaysDays post inoculation
SexSex of the rat
WeightInitial weight (in grams)
LossWeight loss (in grams)
TumorTumor weight (in 10
^{-4}grams)
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
Examples
str(case1102)
plot(Brain/Liver ~ Time, case1102, log="xy", pch=ifelse(Treat=="BD", 19,21))
legend(10,0.1, pch=c(19,21), c("Saline control", "Barrier disruption"))
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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