netmeta (version 0.4-0)

forest.netmeta: Forest plot

Description

Draws a forest plot in the active graphics window (using grid graphics system).

Usage

## S3 method for class 'netmeta':
forest(x,
       pooled=ifelse(x$comb.random, "random", "fixed"),
       reference.group=x$reference.group,
       leftcols="studlab",
       leftlabs="Treatment",
       smlab=NULL,
       ...)

Arguments

x

An object of class netmeta.

reference.group

Reference group.

pooled

A character string indicating whether results for fixed effect ("fixed") or random effects model ("random") should be plotted. Can be abbreviated.

leftcols

A character vector specifying (additional) columns to be plotted on the left side of the forest plot or a logical value (see forest.meta help page for details).

leftlabs

A character vector specifying labels for (additional) columns on left side of the forest plot (see forest.meta help page for details).

smlab

A label printed at top of figure. By default, text indicating either fixed effect or random effects model is printed.

...

Additional arguments for forest.meta function.

Details

A forest plot, also called confidence interval plot, is drawn in the active graphics window.

For more information see help page of forest.meta function.

See Also

forest.meta

Examples

data(Senn2013)

##
## Fixed effect model (default)
##
net1 <- netmeta(TE, seTE, treat1, treat2, studlab,
                data=Senn2013, sm="MD")

forest(net1, ref="plac")

forest(net1, xlim=c(-1.5,1), ref="plac",
       xlab="HbA1c difference",
       leftcols="studlab", rightcols=NULL,
       leftlabs="Contrast to placebo")

##
## Random effects effect model
##
net2 <- netmeta(TE, seTE, treat1, treat2, studlab,
                data=Senn2013, sm="MD", comb.random=TRUE)

forest(net2, xlim=c(-1.5,1), ref="plac",
       xlab="HbA1c difference",
       leftcols="studlab", rightcols=NULL,
       leftlabs="Contrast to placebo")