ANC Table {epicalc} | R Documentation |
This dataset contains frequency of various combinations of methods of antenatal care in two clinics with the outcome being perinatal mortality.
data(ANCtable)
A data frame with 8 observations on the following 4 variables.
death
a numeric vector: 1=no, 2=yes
anc
a numeric vector indicating antenatal care type: 1=old 2=new
clinic
a numeric vector indicating clinic code: 1=clinic A, 2=clinic B
Freq
a numeric vector of frequencies
data(ANCtable) use(ANCtable) death <- death==2 anc <- factor(anc); levels(anc) <- c("old", "new") clinic <- factor(clinic); levels(clinic) <- c("A","B") glm1 <- glm(death ~ anc ,weights=Freq, family=binomial) logistic.display(glm1) glm2 <- glm(death ~ anc + clinic ,weights=Freq, family=binomial) logistic.display(glm2) lrtest(glm1, glm2) rm(death, anc, clinic)