Nothing
## ----echo=FALSE,eval=FALSE----------------------------------------------------
# options(width=80)
## ----results='hide',eval=FALSE------------------------------------------------
# library(catdata)
# data(knee)
# attach(knee)
## ----eval=FALSE---------------------------------------------------------------
# R2D <- rep(0, length(R2))
# R3D <- rep(0, length(R3))
# R4D <- rep(0, length(R3))
#
# R2D[R2>2] <- 1
# R3D[R3>2] <- 1
# R4D[R4>2] <- 1
## ----eval=FALSE---------------------------------------------------------------
# N <- rep(knee$N, each=3)
# Th <- rep(knee$Th, each=3)
# Age <- rep(knee$Age, each=3)
# Sex <- rep(knee$Sex, each=3)
## ----eval=FALSE---------------------------------------------------------------
# Response <- c(rbind(R2D,R3D,R4D))
# Age2 <- Age^2
## ----eval=FALSE---------------------------------------------------------------
# Th <- as.factor(Th)
# Sex <- as.factor(Sex)
## ----eval=FALSE---------------------------------------------------------------
# library(gee)
## ----results='hide',eval=FALSE------------------------------------------------
# gee1a <- gee(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit))
## ----eval=FALSE---------------------------------------------------------------
# summary(gee1a)
## ----results='hide',eval=FALSE------------------------------------------------
# gee2a <- gee(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit), corstr="exchangeable")
## ----eval=FALSE---------------------------------------------------------------
# summary(gee2a)
## ----results='hide',eval=FALSE------------------------------------------------
# gee3a <- gee(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit), corstr="AR-M", Mv=1)
## ----eval=FALSE---------------------------------------------------------------
# summary(gee3a)
## ----eval=FALSE---------------------------------------------------------------
# library(geepack)
## ----results='hide',eval=FALSE------------------------------------------------
# gee1b <- geeglm(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit))
## ----eval=FALSE---------------------------------------------------------------
# summary(gee1b)
## ----results='hide',eval=FALSE------------------------------------------------
# gee2b <- geeglm(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit), corstr="exchangeable")
## ----eval=FALSE---------------------------------------------------------------
# summary(gee2b)
## ----results='hide',eval=FALSE------------------------------------------------
# gee3b <- geeglm(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit), corstr="ar1")
## ----eval=FALSE---------------------------------------------------------------
# summary(gee3b)
## ----eval=FALSE---------------------------------------------------------------
# glm1 <- glm(Response ~ Th + Sex + Age + Age2,
# family=binomial(link=logit))
# summary(glm1)
## ----eval=FALSE---------------------------------------------------------------
# Age <- Age-30
# Age2 <- Age^2
## ----results='hide',eval=FALSE------------------------------------------------
# gee1c <- gee(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit))
## ----eval=FALSE---------------------------------------------------------------
# summary(gee1c)
## ----results='hide',eval=FALSE------------------------------------------------
# gee2c <- gee(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit), corstr="exchangeable")
## ----eval=FALSE---------------------------------------------------------------
# summary(gee2c)
## ----results='hide',eval=FALSE------------------------------------------------
# gee3c <- gee(Response ~ Th + Sex + Age + Age2, id=N,
# family=binomial(link=logit), corstr="AR-M", Mv=1)
## ----eval=FALSE---------------------------------------------------------------
# summary(gee3c)
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