Research Synthesis Methods

Article	Citations
Language inclusion in ecological systematic reviews and maps: Barriers and perspectives	198
Comment on a review of methods to assess publication and other reporting biases in meta‐analysis	166
Impact of searching clinical trials registers in systematic reviews of pharmaceutical and non‐pharmaceutical interventions: Reanalysis of meta‐analyses	109
Adherence to conflicts of interest policy in Cochrane reviews where authors are also editorial board members: A cross‐sectional analysis	73
Evaluation of the interim Cochrane rapid review methods guidance—A mixed‐methods study on the understanding of and adherence to the guidance	71
Automated data analysis of unstructured grey literature in health research: A mapping review	68
Issue Information	58
A framework to characterise the reproducibility of meta‐analysis results with its application to direct oral anticoagulants in the acute treatment of venous thromboembolism	57
Accuracy and precision of fixed and random effects in meta‐analyses of randomized control trials for continuous outcomes	51
Issue Information	40
Combining meta‐analysis with multiple imputation for one‐step, privacy‐protecting estimation of causal treatment effects in multi‐site studies	39
Advice for improving the reproducibility of data extraction in meta‐analysis	33
Meta‐analyses of partial correlations are biased: Detection and solutions	30
A technical review of three clinical trials register resources indicates where improvements to the search interfaces are needed	26
Rare events meta‐analysis using the Bayesian beta‐binomial model	25
Facilitating open science practices for research syntheses: PreregRS guides preregistration	25
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Estimating the reference interval from a fixed effects meta‐analysis	23
What are the best methods for rapid reviews of the research evidence? A systematic review of reviews and primary studies	22
A framework for synthesizing intervention evidence from multiple sources into a single certainty of evidence rating: Methodological developments from a US National Academies of S	22
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A mapping exercise using automated techniques to develop a search strategy to identify systematic review tools	18
Kenward‐Roger–type corrections for inference methods of network meta‐analysis and meta‐regression	17
Meta‐analyzing partial correlation coefficients using Fisher's z transformation	17
Combining estimators in interlaboratory studies and meta‐analyses	17

A search of only four key databases would identify most randomized controlled trials of acupuncture: A meta‐epidemiological study	17
Assessment of key characteristics, methodology, and effect size measures used in meta‐analysis of human‐health‐related animal studies	17
Response to Kim et al. “When conducting a systematic review, can one trade search efficiency for potential publication bias?”	17
Additional considerations and response to ‘graphical representation of overlap for OVErviews (GROOVE tool)’	17
Towards the automatic risk of bias assessment on randomized controlled trials: A comparison of RobotReviewer and humans	16
Zero‐ and few‐shot prompting of generative large language models provides weak assessment of risk of bias in clinical trials	16
Case study meta‐analysis in the social sciences. Insights on data quality and reliability from a large‐N case survey	16
How trace plots help interpret meta‐analysis results	15
Development of the individual participant data integrity tool for assessing the integrity of randomised trials using individual participant data	15
Accuracy of conversion formula for effect sizes: A Monte Carlo simulation	14
‘Twenty years of network meta‐analysis: Continuing controversies and recent developments’: A health technology assessment perspective	13
Risk of bias assessment in preclinical literature using natural language processing	13
Broad versus narrow research questions in evidence synthesis: A parallel to (and plea for) estimands	12
Comparing methods for handling missing covariates in meta‐regression	12
MA‐cont:pre/post effect size: An interactive tool for the meta‐analysis of continuous outcomes using R Shiny	11
Two‐stage or not two‐stage? That is the question for IPD meta‐analysis projects	11
Using clinical trial registries to inform Copas selection model for publication bias in meta‐analysis	11
Including non‐English language articles in systematic reviews: A reflection on processes for identifying low‐cost sources of translation support	11
The age of abundant scholarly information and its synthesis– A time when ‘just google it’ is no longer enough	11
On the double‐robustness and semiparametric efficiency of matching‐adjusted indirect comparisons	10
Issue Information	10
Meta‐analysis and partial correlation coefficients: A matter of weights	10
Graphical evaluation of evidence structure within a component network meta‐analysis	10
A rule‐based approach for automatically extracting data from systematic reviews and their updates to model the risk of conclusion change	10
Reporting of Cochrane systematic review protocols with network meta‐analyses—A scoping review	10
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Rapid evidence synthesis approach for limits on the search date: How rapid could it be?	10
Correct standard errors can bias meta‐analysis	10
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Searchsmart.org: Guiding researchers to the best databases and search systems for systematic reviews and beyond	9
Network meta analysis to predict the efficacy of an approved treatment in a new indication	9
Beyond Google Scholar, Scopus, and Web of Science: An evaluation of the backward and forward citation coverage of 59 databases' citation indices	9
Adjusting for misclassification of an exposure in an individual participant data meta‐analysis	9
Developing prediction models when there are systematically missing predictors in individual patient data meta‐analysis	9
Response to Hemilä and Chalker's “Pitfalls in choosing data examples for methodological work: Bayesian approaches to a fixed effects meta‐analysis of zinc lozenges for the common cold”	8
Issue Information	8
Bayesian sparse modeling to identify high‐risk subgroups in meta‐analysis of safety data	8
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A REML method for the evidence‐splitting model in network meta‐analysis	8
Reverse‐Bayes methods for evidence assessment and research synthesis	7
Sensitivity analysis for the interactive effects of internal bias and publication bias in meta‐analyses	7
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Methods for using Bing's AI‐powered search engine for data extraction for a systematic review	7
PsychOpen CAMA: Publication of community‐augmented meta‐analyses in psychology	7
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A comprehensive review and shiny application on the matching‐adjusted indirect comparison	7
Methodological considerations for novel approaches to covariate‐adjusted indirect treatment comparisons	7

Meta‐analysis of prevalence: I2 statistic and how to deal with heterogeneity	7
Using artificial intelligence methods for systematic review in health sciences: A systematic review	7
Bayesian meta‐analysis for evaluating treatment effectiveness in biomarker subgroups using trials of mixed patient populations	7
Exploring the relevance of the effect of geographical location when searching for studies using Google Search	7
Combining endpoint and change data did not affect the summary standardised mean difference in pairwise and network meta‐analyses: An empirical study in depression	6
Bayesian meta‐analysis usingSAS PROC BGLIMM	6
Bias propagation in network meta‐analysis models	6
Graphical Representation of Overlap for OVErviews: GROOVE tool	6
Reevaluation of statistically significant meta‐analyses in advanced cancer patients using the Hartung–Knapp method and prediction intervals—A methodological study	6
Synthesizing cross‐design evidence and cross‐format data using network meta‐regression	6
The impact of continuity correction methods in Cochrane reviews with single‐zero trials with rare events: A meta‐epidemiological study	6
Estimating interactions and subgroup‐specific treatment effects in meta‐analysis without aggregation bias: A within‐trial framework	6
Data extraction for evidence synthesis using a large language model: A proof‐of‐concept study	6
How should we handle predatory journals in evidence synthesis? A descriptive survey‐based cross‐sectional study of evidence synthesis experts	5
What you see depends on where you sit: The effect of geographical location on web‐searching for systematic reviews: A case study	5
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In‐depth evaluation of machine learning methods for semi‐automating article screening in a systematic review of mechanistic literature	5
Issue Information	5
Adapting how to use Google Search to identify studies for systematic reviews in view of a recent change to how search results are displayed	5
Applying Bradford Hill to assessing causality in systematic reviews: A transparent approach using process tracing	5
Conducting power analysis for meta‐analysis with dependent effect sizes: Common guidelines and an introduction to the POMADE R package	5
Exploring methodological approaches used in network meta‐analysis of psychological interventions: A scoping review	5
Retrieving Cochrane reviews is sometimes challenging and their reporting is not always optimal	5
Network meta‐analysis: Looping back	5
Meta‐analyses of phase I dose‐finding studies: Application for the development of protein kinase inhibitors in oncology	5
Fast‐and‐frugal decision tree for the rapid critical appraisal of systematic reviews	5
Uncertain about uncertainty in matching‐adjusted indirect comparisons? A simulation study to compare methods for variance estimation	5
Bayesian pairwise meta‐analysis of time‐to‐event outcomes in the presence of non‐proportional hazards: A simulation study of flexible parametric, piecewise exponential and fractional polynomial models	5
Meta‐regression methods to characterize evidence strength using meaningful‐effect percentages conditional on study characteristics	4
Methodological guidance for rapid reviews in healthcare: A scoping review	4
Examining how meta‐analytic methods perform in the presence of bias: A simulation study	4
Machine learning for identifying relevant publications in updates of systematic reviews of diagnostic test studies	4
Issue Information	4
P‐hacking in meta‐analyses: A formalization and new meta‐analytic methods	4
Retrospective median power, false positive meta‐analysis and large‐scale replication	4
Consensus on the definition and assessment of external validity of randomized controlled trials: A Delphi study	4
CLUSTER searching approach to inform evidence syntheses: A methodological review	4
Network meta‐interpolation: Effect modification adjustment in network meta‐analysis using subgroup analyses	4
Issue Information	4
Response to: Briscoe “Exploring the relevance of the effect of geographical location when searching for studies using Google Search”	4
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Methods for population adjustment with limited access to individual patient data: A review and simulation study	4
A real‐world evaluation of the implementation of NLP technology in abstract screening of a systematic review	4
Regarding approaches to simulating random‐effects	4
Cumulative meta‐analysis: What works	4
Why do researchers co‐author evidence syntheses with librarians? A mixed‐methods study	4
Investigation of bias due to selective inclusion of study effect estimates in meta‐analyses of nutrition research	3
Data sharing policies across health research globally: Cross‐sectional meta‐research study	3
The confounder matrix: A tool to assess confounding bias in systematic reviews of observational studies of etiology	3
Estimation of heterogeneity variance based on a generalized Q statistic in meta‐analysis of log‐odds‐ratio	3
Sample size calculation for clinical trials analyzed with the meta‐analytic‐predictive approach	3
Location‐scale models for meta‐analysis	3
Meta‐analytic structural equation modeling made easy: A tutorial and web application for one‐stageMASEM	3
Calculating the power of a planned individual participant data meta‐analysis to examine prognostic factor effects for a binary outcome	3
Synthesis of evidence from zero‐events studies: A comparison of one‐stage framework methods	3
Exact inference for fixed‐effects meta‐analysis of proportions	3
Combining meta‐epidemiological study datasets on commercial funding of randomised clinical trials: Database, methods, and descriptive results of the COMFIT study	3
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Effect estimates can be accurately calculated with data digitally extracted from interrupted time series graphs	3
A critical reflection on computing the sampling variance of the partial correlation coefficient	3
A comparison of two models for detecting inconsistency in network meta‐analysis	3
Cluster wild bootstrapping to handle dependent effect sizes in meta‐analysis with a small number of studies	3
Accounting for time dependency in meta‐analyses of concordance probability estimates	3
The consequences of neglected confounding and interactions in mixed‐effects meta‐regression: An illustrative example	3
How to plan and manage an individual participant data meta‐analysis. An illustrative toolkit	3
Reply to “Comment on a review of methods to assess publication and other reporting biases in meta‐analysis”	2
Graphical tools for visualizing the results of network meta‐analysis of multicomponent interventions	2
Searching for medical devices – Practical guidance	2
Robust variance estimation in small meta‐analysis with the standardized mean difference	2
On the bias of complete‐ and shifting‐case meta‐regressions with missing covariates	2
Meta‐analysis of dichotomous and ordinal tests with an imperfect gold standard	2
Missingness mechanism messiness in meta‐analysis: A response to “The importance of plausible data‐generating mechanisms in simulation studies”	2
Selecting relevant moderators with Bayesian regularized meta‐regression	2
Paperfetcher: A tool to automate handsearching and citation searching for systematic reviews	2
A confidence interval robust to publication bias for random‐effects meta‐analysis of few studies	2
Issue Information	2
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Inclusive critical appraisal of qualitative and quantitative findings in evidence synthesis	2

Response to discussant comments on “NMA, the first 20 years”	2
The impact of correction methods on rare‐event meta‐analysis	2
Combining randomized and non‐randomized data to predict heterogeneous effects of competing treatments	2
Issue Information	2
Lessons learnt: Undertaking rapid reviews on public health and social measures during a global pandemic	2
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Causal assessment in evidence synthesis: A methodological review of reviews	2
Quantifying the robustness of primary analysis results: A case study on missing outcome data in pairwise and network meta‐analysis	2
Identifying evidence for five realist reviews in primary health care: A comparison of search methods	2
Scoping review search practices in the social sciences: A scoping review	2
metamedian: An R package for meta‐analyzing studies reporting medians	2
Issue Information	2
A new taxonomy was developed for overlap across 'overviews of systematic reviews': A meta‐research study of research waste	2
Bayesian random‐effects meta‐analysis with empirical heterogeneity priors for application in health technology assessment with very few studies	2