Network meta-analysis on blood loss during liver transplantation
Network meta-analysis comparing the effects of a number of interventions for decreasing blood loss and blood transfusion requirements during liver transplantation.
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 |
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
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)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.