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Systematic Reviews & Evidence Synthesis Methods

Tools

Selecting Evidence Synthesis Tools

This page lists a sampling of commonly used tools to help with various stages of your evidence synthesis project. Tools are grouped by the following functions:

For more, search the Systematic Review Toolbox, a catalog of tools supporting the review process, or see the Additional Resources below.

 

Search Strategy Development Tools

citationchaser (free, open source)

  • Automates citation chasing, saving time and effort in finding relevant studies.
  • Covers a wide range of scholarly records, including sources from PubMed, CrossRef, and CORE.
  • Web-based platform version with user-friendly interface. No coding knowledge required.
  • Open-source tool making the citation chasing process more transparent and reproducible.
  • citationchaser Tutorial (11:29 minutes)

MeSH On Demand (free)

  • Analyzes free-text input and suggests relevant MeSH (Medical Subject Headings) terms.
  • Leverages resources from the National Library of Medicine for reliable MeSH term suggestions.
  • Assists in identifying controlled vocabulary for search strategies, improving relevance.
  • MeSH On Demand Tutorial (4:49 minutes)

PubMed PubReMiner (free)

  • Identifies and analyzes patterns in PubMed search results.
  • Extracts key information like frequently used terms and co-occurring keywords.
  • Streamlines the analysis of large sets of PubMed search results.
  • Shows relationships between terms, authors, and journals to help refine research hypotheses.
  • PubMed PubReMiner Tutorial (2:44 minutes)

PubMed Search Tester (free)

  • Enables manual classification of search results into "good" (relevant) and "bad" (irrelevant) groups to create a validation set.
  • Tests multiple search strategies against the validation set to evaluate performance.
  • Provides feedback on sensitivity (ability to find relevant citations) and precision (ability to avoid irrelevant ones) for each strategy.
  • Supports iterative tweaking and testing of search strategies to optimize sensitivity and precision.

Yale MeSH Analyzer (free)

  • Analyzes and organizes MeSH terms into a grid for easy scanning.
  • Explores relationships between medical terms.
  • Identifies term variants and indexing patterns.
  • Improves literature searches by identifying relevant MeSH terms and their connections.
  • Yale MeSH Analyzer Tutorial (3:38 minutes)

Citation Management, Deduplication, and Screening Tools

abstrackr (free, open source)

  • Facilitates the abstract screening process for systematic reviews.
  • Multiple reviewers can assess and annotate citations, creating a digital record of all decisions.
  • Uses machine learning to prioritize relevant citations, reducing manual reviews.
  • Imports citation data from various sources like RefMan and PubMed.
  • abstrackr Tutorial (3:10 minutes)

EndNote (free and paid options available)

  • Collects, organizes, and manages research materials and references.
  • Automatically generates citations, bibliographies, and reference lists in multiple styles.
  • Offers deduplication, advanced searching, filtering, and sorting options.
  • Supports collaboration through shared libraries and shared groups of references.
  • Ideal for researchers seeking advanced features (e.g., Online Search) for extensive research.
  • Free version: EndNote Basic / Online Guide: Getting Started
  • Paid version: EndNote Guide: Getting Started

Mendeley (free and paid options available based on storage needs)

  • Collects, organizes, and manages research materials and references.
  • Automatically generates citations and bibliographies in multiple styles.
  • Built-in deduplication feature auto-detects duplicate references.
  • Offers robust PDF annotation tools (e.g., highlighting, adding notes directly on PDFs).
  • Ideal for large teams needing a citation manager with robust PDF annotation and collaboration tools.
  • Mendeley Help Guide
  • Mendeley YouTube Channel

Rayyan (free and paid options available)

  • Web-based tool designed for efficiently screening and reviewing articles.
  • Streamlines study selection by letting users tag and categorize articles.
  • Identifies duplicate references automatically; users manually review and resolve them.
  • Supports collaboration with team members and tracks decisions throughout the review process.
  • Rayyan Systematic Review Tutorial (14:01 minutes)

Zotero (free and paid options available based on storage needs)

  • Collects and organizes research materials, annotations, and references.
  • Automatically generates citations and bibliographies in multiple styles.
  • Supports tagging, advanced searching, and deduplication.
  • Allows export to screening tools like Rayyan but lacks built-in screening functionality.
  • Ideal for collaboration and sharing references with team members; free and user-friendly.
  • Zotero Guide: Getting Started

Need more information? Check out our guide on Citation Managers for Research Organization.

Data Management Tools

RevMan (paid subscription, free for authors working on Cochrane Reviews)

  • Provides tools for analyzing and reporting data; data extraction occurs separately.
  • Performs meta-analysis on imported and manually entered data.
  • Visualizes results in forest plots.
  • Input and visualize Risk of Bias assessments.
  • RevMan Tutorial (13:00 minutes)

Systematic Review Data Repository (SRDR+) (free)

  • Platform for extracting and sharing data; analysis and synthesis are typically done externally.
  • Allows building electronic data extraction forms and customizing dataset exports.
  • Supports collaboration with team members.
  • Provides access to study data from published systematic reviews.
  • SRDR+ Tutorials

Evidence Synthesis Workflow Tools

Workflow tools streamline evidence synthesis by performing key tasks such as deduplication, screening, data extraction, analysis, synthesis, and project management. Some workflow tools require a fee.


CADIMA (free)

  • Supports systematic reviews and evidence maps in environmental and other sciences.
  • Guides users through review stages: planning, screening, data extraction, and appraisal.
  • Enables collaborative project management with customizable roles and access levels.
  • Offers tailored forms for screening, data extraction, and risk of bias assessment.
  • Provides data export options and documentation for transparency and reproducibility.
  • CADIMA Tutorials

Colandr (free, open access, open source)

  • Uses machine learning to assist in identifying relevant studies during screening.
  • Supports structured, manual data extraction using customizable forms.
  • Supports customizable workflows and collaboration.
  • Assists in ranking studies by predicted relevance during screening; quality assessment is manual.
  • Colandr Webinar (1:28:13 minutes)

Covidence (paid subscription, free trial available)

  • User-friendly, web-based platform for deduplication, title/abstract and full text screening.
  • Includes data extraction and quality assessment features for standard Cochrane-type reviews.
  • Ideal for teams working on large-scale reviews.
  • Integrates with citation management systems like EndNote and Zotero.
  • Covidence Tutorials

DistillerSR (paid subscription)

  • Cloud-based software for evidence syntheses.
  • Helps researchers manage citations, screen studies, and extract and appraise data.
  • Provides customizable workflows, collaborative features, and reporting capabilities.
  • Includes AI tools for screening and workflow optimization; external tools needed for data analysis.
  • DistillerSR Quickstart Tutorial (5:23 minutes)

EPPI-Reviewer (paid subscription, free for Cochrane and Campbell authors, free trial available)

  • Web-based tool that facilitates qualitative and quantitative analyses.
  • Uses machine learning for screening prioritization, classification, and updating living systematic reviews.
  • Offers capabilities for data extraction, coding, synthesis, reporting, and export.
  • Includes tools for evidence mapping (EPPI-Mapper) and data visualizations (EPPI-Visualiser).
  • EPPI-Reviewer Tutorials

JBI SUMARI (paid subscription, free trial available)

  • Web-based tool for JBI systematic reviews in health, social sciences, and humanities fields.
  • Supports the entire review process from protocol development to report writing.
  • Imports citations from databases like PubMed or MEDLINE, or citation managers via RIS files.
  • Creates automatic PRISMA flow diagrams to document the screening process.
  • JBI SUMARI Tutorials

Systematic Review Accelerator (free)

  • Suite of tools designed to streamline the evidence synthesis process. Key tools include:
    • Polyglot Search: Translates PubMed or Ovid MEDLINE searches to run in other databases.
    • Deduplicator: Marks records considered to be duplicates.
    • Screenatron: Uses custom hotkeys and keyword highlighting to simplify screening.
    • Disputatron: Detects and resolves screening disagreements between reviewers.
    • SpiderCite: Facilitates forward and backward citation searching from a collection of articles.
  • Ideal for high-volume reviews and evidence syntheses requiring a fast turnaround time.
  • Systematic Review Accelerator Help Videos

Additional Resources

Articles

Couban, R. (2016). Covidence and Rayyan. Journal of the Canadian Health Libraries Association / Journal De l’Association Des bibliothèques De La Santé Du Canada, 37(3) 124-126. https://doi.org/10.5596/c16-025

Elamin, M. B., Flynn, D. N., Bassler, D., Briel, M., Alonso-Coello, P., Karanicolas, P. J., … Montori, V. M. (2009). Choice of data extraction tools for systematic reviews depends on resources and review complexity. Journal of Clinical Epidemiology, 62(5), 506-510. https://doi.org/10.1016/j.jclinepi.2008.10.016

Harrison, H., Griffin, S.J., Kuhn, I., & Usher-Smith, J.A. (2020). Software tools to support title and abstract screening for systematic reviews in healthcare: An evaluation. BMC Medical Research Methodology, 20(7). https://doi.org/10.1186/s12874-020-0897-3

Kohl, C., McIntosh, E.J., Unger, S., Haddaway, N.R., Kecke, S., Schiemann, J., & Wilhelm, R. (2018). Online tools supporting the conduct and reporting of systematic reviews and systematic maps: A case study on CADIMA and review of existing tools. Environmental Evidence, 7(8). https://doi.org/10.1186/s13750-018-0115-5

Videos

Features SR Accelerator's Polyglot Search Translator, Deduplicator, and SpiderCite; EndNote, and Rayyan.

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