Glucose2 {MEMSS} | R Documentation |
Glucose Levels Following Alcohol Ingestion
Description
The Glucose2
data frame has 196 rows and 4 columns.
Format
This data frame contains the following columns:
- Subject
-
a factor with levels
A
toG
- Date
-
a factor with levels
1
2
indicating the occasion in which the experiment was conducted. - Time
-
a numeric vector giving the time since alcohol ingestion (in min/10).
- glucose
-
a numeric vector giving the blood glucose level (in mg/dl).
Details
Hand and Crowder (Table A.14, pp. 180-181, 1996) describe data on the blood glucose levels measured at 14 time points over 5 hours for 7 volunteers who took alcohol at time 0. The same experiment was repeated on a second date with the same subjects but with a dietary additive used for all subjects.
Source
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York. (Appendix A.10)
Hand, D. and Crowder, M. (1996), Practical Longitudinal Data Analysis, Chapman and Hall, London.
Examples
require(lattice)
str(Glucose2)
xyplot(glucose ~ Time | Subject, Glucose2, type = c("g", "b"),
groups = Date, aspect = 'xy', layout = c(4,2),
index.cond = function(x,y) max(y))