After searching,I didn't find any guidelines on conducting meta-regression on prevalence meta-analysis(no treatment group).
Where or how can i make it? here is a data set, after i made an overall estimate and there was heterogeneity(p<.001). How can I use meta-regression to track the source of this heterogeneity. In a priori,I suspected that the prevalence may change with the year,region and maybe high among pregnant women.
set.seed(100) study<-paste("study",1:70) events<-sample(1:100,70,replace=T) studysize<-sample(500:5000,70,replace=T) studyyear<-sample(1980:2015,70,replace=T) studyregion<-rep(c("africa","america","asia","europe"),70/4) studyincludedpregnants<-rep(c("yes","no"),70/2) #overall estimate library(meta) m1 <- metaprop(events,studysize)