Description Usage Format References See Also Examples
Extended version of the epil
dataset of the MASS package.
The three transformed variables Visit
, Base
, and
Age
used by Booth et al. (2003) have been added to epil
.
1 |
A data frame with 236 observations on the following 12 variables:
y
an integer vector.
trt
a factor with levels "placebo"
and
"progabide"
.
base
an integer vector.
age
an integer vector.
V4
an integer vector.
subject
an integer vector.
period
an integer vector.
lbase
a numeric vector.
lage
a numeric vector.
(rep(1:4,59) - 2.5) / 5
.
log(base/4)
.
log(age)
.
Booth, J.G., G. Casella, H. Friedl, and J.P. Hobert. 2003. Negative binomial loglinear mixed models. Statistical Modelling 3:179–191.
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