netbind {netmeta}

Combine network meta-analysis objects

Description

This function can be used to combine network meta-analysis objects which is especially useful to generate a forest plot with results of several network meta-analyses.

Usage

netbind(
  ...,
  name,
  common,
  random,
  col.study = "black",
  col.inside = "white",
  col.square = "gray",
  col.square.lines = col.square,
  backtransf,
  reference.group,
  baseline.reference,
  warn.deprecated = gs("warn.deprecated"),
  fixed,
  comb.fixed,
  comb.random
)

Arguments

...

Any number of network meta-analysis objects or a single list with network meta-analyses.

name

An optional character vector providing descriptive names for network meta-analysis objects.

common

A logical indicating whether results for the common effects model should be reported.

random

A logical indicating whether results for the random effects model should be reported.

col.study

The colour for network estimates and confidence limits.

col.inside

The colour for network estimates and confidence limits if confidence limits are completely within squares.

col.square

The colour for squares.

col.square.lines

The colour for the outer lines of squares.

backtransf

A logical indicating whether results should be back transformed. If backtransf = TRUE (default), results for sm = "OR" are printed as odds ratios rather than log odds ratios, for example.

reference.group

Reference treatment.

baseline.reference

A logical indicating whether results should be expressed as comparisons of other treatments versus the reference treatment (default) or vice versa. This argument is only considered if reference.group has been specified.

warn.deprecated

A logical indicating whether warnings should be printed if deprecated arguments are used.

fixed

Deprecated argument; replaced by common.

comb.fixed

Deprecated argument; replaced by common.

comb.random

Deprecated argument; replaced by random.

Value

An object of class "netbind" with corresponding forest function. The object is a list containing the following components:

common

A data frame with results for the common effects model.

random

A data frame with results for the random effects model.

sm

Summary measure used in network meta-analyses.

level.ma

Level for confidence intervals.

reference.group, baseline.reference

As defined above.

Author(s)

Guido Schwarzer [e-mail]

See Also

netmeta, netcomb, discomb, forest.netbind

Examples

data(Linde2016)

# Only consider studies including Face-to-face PST (to reduce
# runtime of example)
#
face <- subset(Linde2016, id %in% c(16, 24, 49, 118))

# Standard random effects NMA model (with placebo as reference
# treatment)
#
net1 <- netmeta(lnOR, selnOR, treat1, treat2, id,
  data = face, reference.group = "placebo",
  sm = "OR", common = FALSE)

# Additive CNMA model with placebo as inactive component and
# reference
#
nc1 <- netcomb(net1, inactive = "placebo")

# Combine results of standard NMA and CNMA
#
nb1 <- netbind(nc1, net1,
  name = c("Additive CNMA", "Standard NMA"),
  col.study = c("red", "black"), col.square = c("red", "black"))
forest(nb1,
  col.by = "black", addrow.subgroups = FALSE,
  fontsize = 10, spacing = 0.7, squaresize = 0.9,
  label.left = "Favours Placebo",
  label.right = "Favours other")