Description Format Details Source Examples
The PBG
data frame has 60 rows and 5 columns.
This data frame contains the following columns:
a numeric vector
a numeric vector
an ordered factor with levels
T5
< T4
< T3
< T2
< T1
< P5
< P3
< P2
< P4
< P1
a factor with levels
MDL 72222
Placebo
an ordered factor with levels
5
< 3
< 2
< 4
< 1
Data on an experiment to examine the effect of a antagonist MDL 72222 on the change in blood pressure experienced with increasing dosage of phenylbiguanide are described in Ludbrook (1994) and analyzed in Venables and Ripley (1999, section 8.8). Each of five rabbits was exposed to increasing doses of phenylbiguanide after having either a placebo or the HD5-antagonist MDL 72222 administered.
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S and S-PLUS, Springer, New York. (Appendix A.21)
Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics with S-PLUS (3rd ed), Springer, New York.
Ludbrook, J. (1994), Repeated measurements and multiple comparisons in cardiovascular research, Cardiovascular Research, 28, 303-311.
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Loading required package: lme4
Loading required package: Matrix
Attaching package: 'MEMSS'
The following objects are masked from 'package:datasets':
CO2, Orange, Theoph
'data.frame': 60 obs. of 5 variables:
$ deltaBP : num 0.5 4.5 10 26 37 32 1 1.25 4 12 ...
$ dose : num 6.25 12.5 25 50 100 200 6.25 12.5 25 50 ...
$ Run : Factor w/ 10 levels "P1","P2","P3",..: 1 1 1 1 1 1 2 2 2 2 ...
$ Treatment: Factor w/ 2 levels "MDL 72222","Placebo": 2 2 2 2 2 2 2 2 2 2 ...
$ Rabbit : Factor w/ 5 levels "1","2","3","4",..: 1 1 1 1 1 1 2 2 2 2 ...
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