Hi,
I'm trying to run an ordinal mixed effects model with Mixor command. I have 65
cases and repeated visits in 0, 6, 9, 12 and 18 months. My code is the
following:
cannabis<-c(datos$cannabis0, datos$cannabis6, datos$cannabis9,
datos$cannabis12, datos$cannabis18)
time<-c(rep(0, 65), rep(6, 65), rep(9, 65), rep(12, 65), rep(18, 65))
id<-c(rep(datos$id, 5))
group<-c(rep(datos$group, 5))
res<-data.frame(cbind(id, group, time, cannabis))
names(res)<-c("id", "group", "time", "cannabis")
res<-res[order(res$id),]
cannabismod<-mixor(cannabis~ time + as.factor(group), data=res, id=id,
na.exclude, which.random.slope=na, link="logit")
summary(cannabismod)
However, I have obtained this error:
Error in xj[i] : invalid subscript type 'closure'
Please, could anyone help me to solve it?
Many thanks,
Susana
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