dietox {geepack}R Documentation

Growth curves of pigs in a 3x3 factorial experiment

Description

The dietox data frame has 861 rows and 7 columns.

Usage

data(dietox)

Format

This data frame contains the following columns:

Weight
a numeric vector
Feed
a numeric vector
Time
a numeric vector
Pig
a numeric vector
Evit
a numeric vector
Cu
a numeric vector
Litter
a numeric vector

Source

Lauridsen, C., Højsgaard, S.,Sørensen, M.T. C. (1999) Influence of Dietary Rapeseed Oli, Vitamin E, and Copper on Performance and Antioxidant and Oxidative Status of Pigs. J. Anim. Sci.77:906-916

Examples

data(dietox)
dietox$Cu     <- as.factor(dietox$Cu)
gee01 <- geeglm (Weight ~ Time + Cu + Cu * Time, id =Pig, data = dietox,
         family=gaussian,corstr="ex")

mf <- formula(Weight~Cu*(Time+I(Time^2)+I(Time^3)))
gee1 <- geeglm(mf, data=dietox, id=Pig, family=poisson("identity"),corstr="ar1")
summary(gee1)
anova(gee1)


[Package geepack version 1.0-16 Index]