Evidence Synthesis Writing Guide & Worksheet

Evidence synthesis moves beyond describing individual studies. It asks what the body of evidence supports when findings, methods, limitations, consistency, and applicability are considered together.

The YourDNP Evidence Synthesis Writing Guide & Worksheet helps DNP students move from an evidence table into a clear written synthesis. It is designed for evidence-based practice assignments, literature reviews, scholarly projects, and DNP project development.

The worksheet is an educational resource and should be adapted to your course instructions, grading rubric, faculty expectations, and required evidence-synthesis framework.

What the Worksheet Helps You Do

The guide provides structured space to:

• Identify the claim or conclusion you are trying to support
• Identify the studies contributing to that claim
• Compare the direction and consistency of findings
• Consider magnitude and clinical relevance
• Account for methodological strengths and limitations
• Examine differences across populations, settings, and interventions
• Consider applicability to the practice question
• Identify uncertainty and evidence gaps
• Build a synthesis statement
• Develop a synthesis paragraph
• Check whether the writing reflects the body of evidence rather than a sequence of article summaries

The purpose is to make the reasoning behind the synthesis visible before you begin polishing the final prose.

Move Beyond Article-by-Article Summaries

A common literature-review pattern is to summarize one study, move to the next study, and repeat the process until every source has been described. That approach can show that you read the literature, but it does not necessarily show what the evidence means collectively. Evidence synthesis requires comparison across studies.

Instead of writing:

Study A found this. Study B found this. Study C found this.

Ask:

• Do the studies point in the same direction?
• Are the effects similar?
• Which studies contribute the most confidence?
• What methodological differences help explain conflicting findings?
• Are the populations and settings comparable?
• Does the intervention differ across studies?
• Are the outcomes measured in comparable ways?
• How directly does the evidence apply to the practice question?

The synthesis should reflect those comparisons.

Start With a Synthesis Claim

Before writing a paragraph, identify the conclusion the evidence can reasonably support.

A useful synthesis claim is specific enough to be supported by the included evidence and cautious enough to reflect important limitations.

For example, a claim might address:

• Whether an intervention generally improves an outcome
• Whether benefits appear stronger when certain components are included
• Whether evidence is consistent across settings
• Whether important uncertainty remains
• Whether the available evidence is applicable to the intended practice setting

The worksheet asks you to state the claim first and then identify the evidence that supports, qualifies, or contradicts it.

Compare the Evidence Supporting the Claim

Once the claim is clear, examine the contributing studies together.

Consider:

These judgments should influence how strongly the synthesis is written.

Explain Differences Across Studies

Studies do not need to produce identical results to contribute to the same synthesis.

When findings differ, look for plausible explanations such as:

• Differences in populations
• Differences in intervention intensity
• Additional co-interventions
• Different comparison groups
• Different outcome definitions
• Different follow-up periods
• Differences in adherence or implementation
• Differences in study design or methodological quality
• Differences in clinical or organizational context

Do not force conflicting studies into agreement. Describe the inconsistency and explain what it means for confidence in the conclusion.

Build the Synthesis Paragraph

The worksheet uses a simple progression:

Claim → Evidence → Comparison → Methodological interpretation → Applicability → Conclusion

A synthesis paragraph may begin with the overall finding, bring several studies together as supporting evidence, explain meaningful differences or limitations, and end with what the evidence reasonably supports for the practice question. The exact structure will vary depending on the evidence and assignment.

A strong synthesis paragraph should make it clear why the studies are being discussed together.

Download the Evidence Synthesis Writing Guide & Worksheet

Blank Guide & Worksheet

Use the blank worksheet after completing critical appraisal and organizing studies in an evidence table.

It can help you identify the major claims supported by the literature and develop those claims into synthesis paragraphs.

Completed Example

The completed example demonstrates how several published studies can be compared around a shared evidence claim and then developed into a synthesis paragraph.

It is provided as an instructional example and should not be submitted as original academic work.

Use It After the Evidence Table

The Evidence Table & Synthesis Worksheet helps you organize study characteristics, findings, limitations, and patterns across the body of evidence.

The Evidence Synthesis Writing Guide takes the next step by helping you turn those patterns into written analysis.

→ Use the Evidence Table & Synthesis Worksheet

Before synthesis, individual studies should also be critically appraised.

→ Use the Critical Appraisal Worksheet

Connect Synthesis Back to the Clinical Question

The synthesis should answer the question that guided the evidence review.

If you find yourself writing extensively about findings that do not help answer the focused question, reconsider whether those details belong in the synthesis.

For students still developing the question or literature search:

→ How to Write a Strong PICO Question

→ Use the Literature Search Strategy & Screening Tracker

Use Synthesis to Inform the Practice Decision

Evidence synthesis should ultimately help determine what the literature supports doing.

For a DNP project or evidence-based practice initiative, that may include identifying:

• The intervention with the strongest support
• Components that appear essential to effectiveness
• Populations or settings where the evidence is most applicable
• Important implementation considerations
• Outcomes that should be measured
• Areas where uncertainty remains

The synthesis should inform the project plan rather than sit separately from it.

→ Explore the DNP Project Toolkit

→ Explore Evidence-Based Practice & Research

→ Explore the Resource Library

A strong synthesis allows the reader to see how multiple sources contribute to a single evidence-informed conclusion. The writing should show the relationships among studies, the limits of the evidence, and how confidently the findings can be applied to the question being examined.

---