nmarank function

Calculating ranking statistics of network meta-analysis

Ranking statistics of network meta-analysis such as SUCRA, MEANRANK, and probability of ranking are calculated by parametric bootstrap.

nmarank(x, B=20000, method="NH", ascending=TRUE)

Arguments

• x: Output object of setup
• B: Number of parametric bootstrap resampling (default: 20000)
• method: Estimation and prediction method. NH: Noma-Hamura's improved REML-based methods (default). REML: The ordinary REML method. fixed: Fixed-effect model.
• ascending: A logical value that specify whether the ranking is defined by ascending or descending order.

Returns

Results of the ranking statistics of network meta-analysis are provided. Also, ranking probability plots are generated.

• SUCRA: SUCRA estimates of individual treatment by parametric bootstrap.
• MEANRANK: Mean rank estimates of individual treatment by parametric bootstrap.
• Probability of ranking: Probability of ranking (best, 2nd, 3rd,..., worst) estimates of individual treatment by parametric bootstrap.

References

Salanti, G., Ades, A. E. and Ioannidis, J. P. (2011). Graphical methods and numerical summaries for presenting results from multiple-treatment meta-analysis: An overview and tutorial. Journal of Clinical Epidemiology 64 , 163–171.

Examples

data(heartfailure)

hf2 <- setup(study=study,trt=trt,d=d,n=n,measure="OR",ref="Placebo",data=heartfailure)

nmarank(hf2)
nmarank(hf2, ascending=FALSE)