Glucose2: Glucose Levels Following Alcohol Ingestion

In MEMSS: Data sets from Mixed-effects Models in S

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 to G

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))

Example output

Loading required package: lme4
Loading required package: Matrix

Attaching package: 'MEMSS'

The following objects are masked from 'package:datasets':

    CO2, Orange, Theoph

Loading required package: lattice
'data.frame':	196 obs. of  4 variables:
 $ Subject: Factor w/ 7 levels "1","2","3","4",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ Date   : Factor w/ 2 levels "1","2": 1 1 1 1 1 1 1 1 1 1 ...
 $ Time   : num  -1 0 2 4 6 8 10 12 15 18 ...
 $ glucose: num  3 3 4.7 6 6.3 4.3 3 2 4.5 3.8 ...

MEMSS documentation built on May 2, 2019, 5:50 p.m.