I have the beta coefficient and standard error for the treatment effect of four independent groups and I want to test for a trend in the effect size across these four groups. Is there a way to test for this in R?
I have used library meta in the past to test for heterogenetiy between the four groups, but is there a way to test for trend?
library(meta)
TE <- c(0.056951, 0.03208, 0.016578, 0.00921)
seTE <- c(0.018304, 0.012451, 0.009002, 0.008012)
metagen(TE, seTE)
Thanks!
