[R-meta] Question on funnel plot interpretation

Hello all,

I have produced?a funnel plot on the basis of an rma.mv 
<http://rma.mv>()?objectapplied to all the data set together ( not 
subsetting? using moderators ) as follows:

image.png


When looking at the figure I tried to think that maybe one of the 
following two interpretations could be the correct?one:

a. ?There is a kind of random scattering of the effect sizes, therefore 
no symmetry is found and thus publication bised is observed.
b. ?Given the randomness of the effect sizes distribution?covering the 
plot's space?unevenly?there is not a clear pattern that can indicate 
publication bias is observed.

Is any of this interpretation?the correct one?

Thanks a lot.
Kind?regards,
Gabriel


#### CODE. ######
funnel_all <- rma.mv <http://rma.mv>(yi,
 ? ? ? ? ? ? ? ? ? ? ?vi,
 ? ? ? ? ? ? ? ? ? ? ?random = ~ 1 | Article / Sample_ID,
 ? ? ? ? ? ? ? ? ? ? ?data=dat)
png(file = "funnel.png",
 ? ? width = 250,
 ? ? height = 200,
 ? ? res = 600,
 ? ? units = "mm")
# par(mfrow = c(2, 1))

# full data
f1 <- funnel(funnel_all,
 ? ? ? ? ? ? ?yaxis = "seinv",
 ? ? ? ? ? ? ?level = c(90, 95, 99),
 ? ? ? ? ? ? ?ylim = c(1, 20),
 ? ? ? ? ? ? ?shade = c("white", "gray55", "gray75"),
 ? ? ? ? ? ? ?refline = 0,
 ? ? ? ? ? ? ?legend = TRUE)
mtext("A", side = 3, line = 0, adj = -0.13, cex = 2)

dev.off()

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