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Scoping & Systematic Reviews

In this guide you will find information about how to conduct a scoping and systematic review plus information on how librarians can support your in the process.

Types of Reviews

Definition: Scoping reviews are often used to categorize or group existing literature in a given field in terms of its nature, features, and volume. 

When to use: They are typically used for broad questions and can help identify and map the available evidence. A meta-analysis is not usually part of a scoping review. Label body of literature with relevance to time, location (e.g. country or context), source (e.g. peer-reviewed or grey literature), and origin (e.g. healthcare discipline or academic field) It also is used to clarify working definitions and conceptual boundaries of a topic or field or to identify gaps in existing literature/research

You may choose to conduct a Scoping Review:

  • To identify the types of available evidence in a given field
  • To clarify key concepts/definitions in the literature
  • To examine how research is conducted on a certain topic or field
  • To identify key characteristics or factors related to a concept
  • As a precursor to a systematic review (results from the scoping review can help create a more focused question suitable for a systematic review)
  • To identify and analyze knowledge gaps (Munn et al, 2018)

Researchers should become familiar with PRISMA-ScR, when conceptualizing the scoping review project.

Limitations: More citations to screen and takes as long or longer than a systematic review.  Larger teams may be required because of the larger volumes of literature.  Different screening criteria and process than a systematic review

Resources:

Definition: A systematic review is a summary of research results (evidence) that uses explicit and reproducible methods to systematically search, critically appraise, and synthesize on a specific issue. It synthesizes the results of multiple primary studies related to each other by using strategies that reduce biases and errors.

When to use: If you want to identify, appraise, and synthesize all available research that is relevant to a particular question with reproducible search methods.

You may choose to conduct a systematic review

  • To uncover the international evidence
  • To confirm current practice/ address any variation/ identify new practices
  • To identify and inform areas for future research
  • To identify and investigate conflicting results
  • To produce statements to guide decision-making (Munn et al, 2018)

Limitations: It requires extensive time and a team

Resources:

Synthesizing the results of single studies and establishing overall findings for the question of interest from the larger body of evidence enables decision-makers to be more confident in the findings. Examples of significant shifts in best practice following the completion of a systematic review include the practice of giving live-saving corticosteroid injections to pregnant women at risk of giving birth prematurely (see the story of the Cochrane logo) and advice about sleeping positions for babies was contrary to the evidence for many years.

Cochrane is considered one of the most eminent publishers of systematic reviews, along with its sister organization the Campbell Collaboration, and the Joanna Briggs Institute.

Differences Between Scoping & Systematic Reviews

Review Typologies (from LITR-EX)

This site explores different review methodologies such as, systematic, scoping, realist, narrative, state of the art, meta-ethnography, critical, and integrative reviews. The LITR-EX site has a health professions education focus, but the advice and information is widely applicable.

  • Munn, Z., Peters, M. D. J., Stern, C., Tufanaru, C., McArthur, A., & Aromataris, E. (2018). Systematic review or scoping review? Guidance for authors when choosing between a systematic or scoping review approach. BMC Medical Research Methodology, 18(1), 143. https://doi.org/10.1186/s12874-018-0611-x
  Scoping Reviews Systematic Reviews
Broad topic, not answering a specific question/investigating a specific intervention Yes No
Protocol Registration Site Open Science Framework (OSF); Cannot register in PROSPERO  PROSPERO
Typical question outline format PCC PICO
Explicit, transparent search strategy Yes Yes
Standardized data extraction forms Yes Yes
Mandatory critical appraisal of included studies (risk of bias assessment) No Yes
Synthesis of findings from individual studies and generation of summary findings No Yes
Grey Literature Search Not typically done, but may be included depending on the topic Yes
Example Question What research is available about non-pharmaceutical treatments to treat ADHD? Is cognitive behavior therapy an effective treatment for ADHD in young adults?

Source: JBI Manual: Table 11.1 (Modified)

Project Steps

  1. Develop a research question. PICO or other question-framing devices can be used to clarify your question.
  2. Define inclusion and exclusion criteria
  3. Locate studies
  4. Select studies for inclusion
  5. Assess quality of studies
  6. Extract data.
  7. Analyze and present results
  8. Interpret results
  9. Update the review as needed

*Note: These steps are derived from the NIH presentation "Undertaking a Systematic Review: What you Need to Know"

The steps below are based on Chapter 11 of the JBI Manual for Evidence synthesis.

  1. Complete pre-review tasks
  2. Develop the Protocol
  3. Conduct your Literature Search
  4. Manage your citations
  5. Screen your citations
  6. Extract & Chart Data from Included Studies
  7. Write up your Review

Source: JBI Scoping Review Framework (Chapter 11.1.3)

PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) is an evidence-based minimum set of items for reporting in systematic reviews and meta-analyses. Many journals endorse PRISMA and may require authors to use PRISMA when submitting systematic reviews for publication. In 2018 PRISMA published an extension specifically for Scoping Reviews.

How can the library help?

The average review takes 1,168 hours to complete.
A librarian can help you speed up the process.

The methodology for scoping reviews is similar to systematic reviews. While there are some differences, they still require significant time and resources to complete. Scoping reviews follow established guidelines and best practices to produce high-quality research. Librarian involvement in scoping reviews is based on two levels. In Tier 1, the librarian will collaborate with researchers in a consultative manner. In Tier 2, the librarian will be an active member of your research team and co-author on your review. Roles and expectations of librarians vary based on the level of involvement desired. Examples of these differences are outlined in the table below.

Roles and expectations of librarians based on the level of involvement desired.
Role Tasks Tier 1: Consultative Tier 2: Research Partner / Co-author
Topic Development Guidance on process and steps Yes Yes
Background searching for past and upcoming reviews Yes Yes
Development of Eligibility Criteria Development and/or refinement of review topic Yes Yes
Assistance with refinement of PCC (population, comparator(s), and key questions) Yes Yes
Guidance on study types to include Yes Yes
Protocol Creation and Registration Guidance on protocol registration Yes Yes
Searching Identification of databases for searches Yes Yes
Instruction in search techniques and methods Yes Yes
Training in citation management software use for managing and sharing results Yes Yes
Development and execution of searches No Yes
Downloading search results to citation management software and removing duplicates No Yes
Documentation of search strategies No Yes
Management of search results No Yes
Study Selection and Extraction (Charting) Guidance on methods Yes Yes
Guidance on data extraction (charting), and management techniques and software Yes Yes
Writing and Publishing Suggestions of journals to target for publication Yes Yes
Drafting of literature search description in "Methods" section No Yes
Creation of PRISMA diagram No Yes
Drafting of literature search appendix No Yes
Review other manuscript sections and final draft No Yes
Librarian contributions warrant co-authorship No Yes

Request a systematic or scoping review consultation

The average review takes 1,168 hours to complete.
A librarian can help you speed up the process.

Systematic reviews follow established guidelines and best practices to produce high-quality research. Librarian involvement in systematic reviews is based on two levels. In Tier 1, the librarian will collaborate with researchers in a consultative manner. In Tier 2, the librarian will be an active member of your research team and co-author on your review. Roles and expectations of librarians vary based on the level of involvement desired. Examples of these differences are outlined in the table below.

Role Tasks Tier 1: Consultative Tier 2: Research Partner / Co-author
Topic Development Guidance on process and steps Yes Yes
Background searching for past and upcoming reviews Yes Yes
Development of Eligibility Criteria Development and/or refinement of review topic Yes Yes
Assistance with refinement of PICO (population, intervention(s), comparator(s), and key questions) Yes Yes
Guidance on study types to include Yes Yes
Protocol Creation and Registration Guidance on protocol registration Yes Yes
Searching Identification of databases for searches Yes Yes
Instruction in search techniques and methods Yes Yes
Training in citation management software use for managing and sharing results Yes Yes
Development and execution of searches No Yes
Downloading search results to citation management software and removing duplicates No Yes
Documentation of search strategies No Yes
Management of search results No Yes
Study Selection and Extraction Guidance on methods Yes Yes
Guidance on data extraction, and management techniques and software Yes Yes
Writing and Publishing Suggestions of journals to target for publication Yes Yes
Drafting of literature search description in "Methods" section No Yes
Creation of PRISMA diagram No Yes
Drafting of literature search appendix No Yes
Review other manuscript sections and final draft No Yes
Librarian contributions warrant co-authorship No Yes

Request a systematic or scoping review consultation

Publication - End Goals to think about

The publication component is where librarians can become useful again. A librarian can help you identify high-impact journals and help you consider the differences between open access and traditional publishing. In addition, the library has partnerships with publishers to allow authors from APU to publish open access with free or limited APC fees. 

Do your research on the journal(s) you intend to submit to. Make sure you understand their audience, their scope and tone, and any standards or expectations they may have around systematic & scoping reviews.

Additional Publications

Think through how to maximize your publications with your work

  1. Published Systematic or Scoping Review
  2. Register the Protocol
  3. Published data & protocol
  4. Policy brief or white papers for an organization or popular or news rather than scholarly publication