netmeta (version 0.7-0)

dietaryfat: Network meta-analysis of dietary fat

Description

Network meta-analysis comparing the effects of two diets to control on mortality.

The data are rates, given as the number of deaths and person-years. These data are used as an example in the supplemental material of Dias S, Sutton AJ, Ades AE and Welton NJ (2013).

Usage

data(dietaryfat)

source

Dias S, Sutton AJ, Ades AE and Welton NJ (2013). Evidence synthesis for decision making 2: A generalized linear modeling framework for pairwise and network meta-analysis of randomized controlled trials. Medical Decision Making 33, 607--617.

See Also

pairwise, metainc, netmeta, netgraph

Examples

data(dietaryfat)

# Transform data from arm-based format to contrast-based format
p1 <- pairwise(list(treat1, treat2, treat3),
               list(d1, d2, d3),
               time=list(years1, years2, years3),
               studlab=ID,
               data=dietaryfat)
p1

# Conduct network meta-analysis using incidence rate ratios (sm="IRR").
# Note, the argument 'sm' is not necessary as this is the default in R
# function metainc called internally
net1 <- netmeta(TE, seTE, treat1, treat2, studlab, data=p1, sm="IRR")
summary(net1)

# Conduct network meta-analysis using incidence rate differences
# (sm="IRD").
net2 <- netmeta(TE, seTE, treat1, treat2, studlab, data=p1, sm="IRD")
summary(net2)

# Draw network graph
netgraph(net1, points=TRUE, cex.points=3, cex=1.25)
tname <- c("Control","Diet", "Diet 2")
netgraph(net1, points=TRUE, cex.points=3, cex=1.25, labels=tname)