Tools and Templates for an Effective Systematic Literature Review
A systematic literature review (SLR) is a structured and methodical approach to collecting, analyzing, and synthesizing existing research on a specific topic. It’s an essential component in various academic fields, especially when you want to gain a comprehensive understanding of a research area or evaluate the effectiveness of interventions. Conducting a systematic literature review requires a step-by-step process, and utilizing the right tools and templates can streamline your work, increase accuracy, and save time.
This guide covers essential tools and templates for conducting an effective systematic literature review.
Steps in Conducting a Systematic Literature Review
- Defining the Research Question: Clearly define your research question to guide the entire review process.
- Developing a Protocol: Outline your methodology, including inclusion/exclusion criteria, data sources, search strategies, and analysis approach.
- Searching for Relevant Literature: Conduct a thorough and systematic search for relevant studies.
- Screening and Selecting Studies: Apply your inclusion/exclusion criteria to select studies for full-text review.
- Data Extraction: Collect key information from selected studies.
- Synthesis of Results: Synthesize the data in a structured manner.
- Reporting: Document your review process and findings in a structured format.
Essential Tools for a Systematic Literature Review
1. Reference Management Tools
Reference management tools help you organize and manage the studies you collect during your review process.
- EndNote
- EndNote is a widely-used tool that helps with reference management and citation. It allows you to store, organize, and annotate research articles, while also enabling citation and bibliography generation in multiple formats.
- Key Features: Collaboration with other researchers, citation generation, integration with word processors like MS Word, and cloud storage.
- Zotero
- A free, open-source reference manager that is highly regarded for its ability to automatically capture citation information from websites and databases. It also allows you to organize your references and collaborate with other users.
- Key Features: Cloud storage, browser extensions, citation management, and team collaboration.
- Mendeley
- Mendeley is both a reference manager and an academic social network. It allows you to organize research papers, annotate PDFs, and generate citations in various formats.
- Key Features: PDF annotation, citation generation, collaboration with others, and cloud syncing.
2. Systematic Review Software
These tools are designed specifically to assist with conducting systematic reviews, from managing references to extracting and synthesizing data.
- Rayyan
- Rayyan is an online tool that allows for efficient collaboration in the systematic review process. It helps you screen and select studies by quickly applying inclusion/exclusion criteria, and it can help with the data extraction phase as well.
- Key Features: Collaborative screening, fast inclusion/exclusion marking, citation tracking, and machine learning-assisted screening.
- Covidence
- Covidence is a web-based software designed for managing systematic reviews. It helps users import citations, screen studies, extract data, and perform analysis in a structured manner.
- Key Features: Citation management, study screening, data extraction, and reporting.
- DistillerSR
- DistillerSR is an advanced systematic review software designed for large-scale reviews. It streamlines the process of study selection, data extraction, and synthesis using customizable templates and automation.
- Key Features: Workflow automation, customizable data extraction templates, advanced analytics.
- EPPI-Reviewer
- EPPI-Reviewer is a comprehensive tool for systematic review, particularly focused on evidence synthesis. It allows users to conduct data extraction, quality appraisal, and synthesis in a structured way.
- Key Features: Data synthesis, evidence maps, quality appraisal, and full-text review.
3. Data Analysis and Visualization Tools
Once you’ve extracted your data, analyzing and synthesizing it effectively is crucial to drawing meaningful conclusions.
- RevMan (Review Manager)
- RevMan is the software developed by Cochrane to assist with the analysis and presentation of data in systematic reviews. It provides statistical tools for meta-analysis and other methods of data synthesis.
- Key Features: Meta-analysis, statistical analysis, and report generation.
- VOSviewer
- VOSviewer is a tool for creating visualizations of bibliometric networks, which is helpful for understanding patterns in the literature and for conducting a citation analysis.
- Key Features: Citation mapping, network analysis, and visual representation of relationships between studies.
- NVivo
- NVivo is qualitative data analysis software that allows you to analyze unstructured data, such as interview transcripts or qualitative research studies, which can be useful in systematic reviews of qualitative studies.
- Key Features: Data coding, thematic analysis, data visualization, and reporting.
Templates for Systematic Literature Review
Using templates can save you time and help ensure consistency throughout your review process. Below are some templates that can assist with various stages of your SLR:
1. Review Protocol Template
A review protocol outlines your methodology, including the research question, inclusion/exclusion criteria, search strategies, and data extraction methods. It serves as a roadmap for your review.
- Template Components:
- Research Question: Clearly defined question guiding your review.
- Eligibility Criteria: Inclusion and exclusion criteria for selecting studies.
- Search Strategy: Databases, keywords, and time frame for the literature search.
- Data Extraction Plan: How you will collect and organize data from selected studies.
- Quality Assessment: Tools or criteria used for evaluating study quality.
2. Study Selection Form
The study selection form helps you keep track of each study’s inclusion or exclusion, ensuring you follow your protocol consistently.
- Template Components:
- Study Title: Name of the study being screened.
- Abstract Screening: Include a checkbox for whether the abstract meets the inclusion criteria.
- Full-Text Screening: Checkbox for whether the study meets the inclusion criteria based on the full text.
- Reason for Exclusion: A field for noting why studies are excluded.
3. Data Extraction Template
A data extraction template is used to collect key information from the studies you’ve selected. This ensures consistency in the way data is collected.
- Template Components:
- Study Information: Study author(s), publication year, and study design.
- Sample Size: The number of participants or subjects in the study.
- Intervention/Exposure: Description of the intervention or exposure studied.
- Outcome Measures: What outcomes were assessed and how.
- Results: Key findings, including statistical outcomes, effect sizes, etc.
4. Quality Assessment Checklist
Quality assessment is an essential part of a systematic review. This checklist helps ensure that each study is evaluated based on its methodological rigor.
- Template Components:
- Study Design: Is the study design appropriate for the research question?
- Sample Size and Power: Was the sample size adequate to detect meaningful results?
- Risk of Bias: Was there any risk of bias in the study’s design, conduct, or reporting?
- Data Collection: Were the data collection methods sound and reproducible?
- Statistical Analysis: Were appropriate statistical methods used?
5. PRISMA Flow Diagram
The PRISMA flow diagram visually represents the study selection process and helps track the number of studies included and excluded at each stage of your review.
- Template Components:
- Identification: The number of records identified through database searching.
- Screening: The number of records screened and excluded based on abstract/full-text review.
- Eligibility: The number of studies assessed for eligibility and excluded based on inclusion/exclusion criteria.
- Included: The final number of studies included in the review.
Conclusion
Conducting an effective systematic literature review requires careful planning, organization, and the use of the right tools and templates. Tools like Zotero, Covidence, and Rayyan can streamline the review process, while templates such as the study selection form, data extraction template, and PRISMA flow diagram can help ensure consistency and accuracy. By integrating these tools and templates into your review process, you can create a well-organized, comprehensive, and efficient systematic literature review.