Gurusamy2011: Network meta-analysis on blood loss during liver...

In netmeta: Network Meta-Analysis using Frequentist Methods

Network meta-analysis on blood loss during liver transplantation

Description

Network meta-analysis comparing the effects of a number of interventions for decreasing blood loss and blood transfusion requirements during liver transplantation.

Format

A data frame with the following columns:

study	study information (first author, year)
treatment	treatment
death	mortality at 60 days post-transplantation
n	number of individuals in treatment arm

Source

Gurusamy KS, Pissanou T, Pikhart H, Vaughan J, Burroughs AK, Davidson BR (2011): Methods to decrease blood loss and transfusion requirements for liver transplantation. Cochrane Database of Systematic Reviews, CD009052

See Also

pairwise, metabin, netmetabin

Examples

data(Gurusamy2011)

# Only consider three studies (to reduce runtime of example)
#
studies <- c("Findlay 2001", "Garcia-Huete 1997", "Dalmau 2000")
three <- subset(Gurusamy2011, study %in% studies)

# Transform data from long arm-based format to contrast-based
# format. Argument 'sm' has to be used for odds ratio as summary
# measure; by default the risk ratio is used in the metabin
# function called internally.
#
p1 <- pairwise(treatment, death, n, studlab = study,
  data = three, sm = "OR")

# Conduct Mantel-Haenszel network meta-analysis
#
netmetabin(p1, ref = "cont")

## Not run: 
p2 <- pairwise(treatment, death, n, studlab = study,
  data = Gurusamy2011, sm = "OR")

# Conduct Mantel-Haenszel network meta-analysis
netmetabin(p2, ref = "cont")

## End(Not run)

netmeta documentation built on June 23, 2024, 9:06 a.m.