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NMA (version 2.1-1)

Network Meta-Analysis Based on Multivariate Meta-Analysis and Meta-Regression Models

Description

Network meta-analysis tools based on contrast-based approach using the multivariate meta-analysis and meta-regression models (Noma et al. (2025) ). Comprehensive analysis tools for network meta-analysis and meta-regression (e.g., synthesis analysis, ranking analysis, and creating league table) are available through simple commands. For inconsistency assessment, the local and global inconsistency tests based on the Higgins' design-by-treatment interaction model are available. In addition, the side-splitting methods and Jackson's random inconsistency model can be applied. Standard graphical tools for network meta-analysis, including network plots, ranked forest plots, and transitivity analyses, are also provided. For the synthesis analyses, the Noma-Hamura's improved REML (restricted maximum likelihood)-based methods (Noma et al. (2023) ) are adopted as the default methods.

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Version

Install

install.packages('NMA')

Monthly Downloads

552

Version

2.1-1

License

GPL-3

Maintainer

Hisashi Noma

Last Published

September 18th, 2025

Functions in NMA (2.1-1)

nmareg

Network meta-regression based on contrast-based approach
nmaweight

Evaluating study weights and contribution matrix
nmafunnel

Comparison-adjusted funnel plot
trans.armdataP

Transforming arm-specific incidence proportion or survival probability data to arm-level data
transitivity

Checking transitivity
woods2

Network meta-analysis dataset of COPD: Dichotomized data
woods1

Network meta-analysis dataset of COPD: Hazard ratio statistics
smoking

Smoking cessation data
trans.armdata

Transforming contrast-based summary statistics to arm-based data
sidesplit

Sidesplitting for quantifying direct and indirect evidence for all possible treatment pairs and the inconsistency test
setup

Transforming arm-level data to contrast-based summary statistics and making objects for network meta-analysis
rdc

Rounding a numerical value
random.icm

Jackson's random inconsistency model
exdataP

Example data of arm-specific survival probability estimates for a network meta-analysis
NMA-package

The 'NMA' package.
global.ict

Higgins' global inconsistency test
nmarank

Calculating ranking statistics of network meta-analysis
nmaleague

Generating a league table
nmaforest

Generating a ranked forest plot for the synthesis results of network meta-analysis
exdataRR

Example data of summary statistics from Sciarretta et al. (2011)'s network meta-analysis data
antidiabetic

Phung et al. (2010)'s network meta-analysis data
diabetes

Elliott and Mayer (2007)'s network meta-analysis data
local.ict

Local inconsistency tests for all closed loops on the network
heartfailure

Sciarretta et al. (2011)'s network meta-analysis data
exdataMD

Example data of summary statistics from Phung et al. (2010)'s network meta-analysis data
netplot

Generating a networkplot
nmaQ

Multivariate Q-statistic and its factorization
nma

Network meta-analysis based on contrast-based approach using the multivariate meta-analysis model
obj.forest

Numerical objects of ranked forest plot for the synthesis results of network meta-analysis
pairwise

Pairwise meta-analyses for all treatment pairs with direct comparisons on the network