funnel {weightr} | R Documentation |
This function allows you to create a funnel plot using a vector of effect sizes and a vector of their corresponding sampling variances.
funnel(effect, v, type = "se", flip = FALSE)
effect |
a vector of meta-analytic effect sizes |
v |
a vector of sampling variances |
type |
|
flip |
|
This funnel plot, by default, plots the effect sizes on the y-axis and the measure of study size (either variance or standard error) on the x-axis. If no asymmetry is present, the plot should resemble a horizontal funnel.
Users can choose either standard error (default) or sampling variance as a measure of study size. The choice is mostly arbitrary. In both cases, however, v
must be a vector of variances, the same as that required by weightfunct
. The conversion to standard error is automatic.
## Not run:
# Funnel plot using standard error (default):
funnel(effect, v)
# Funnel plot using sampling variance:
funnel(effect, v, type='v')
## End(Not run)