How to Ask a Reviewer for Clarification Without Sounding Incompetent

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-28

Quick Answer

• Ask specific, focused questions that reference the exact reviewer comment and your manuscript section, showing you engaged with the feedback instead of dismissing it.
• Use neutral, professional language that frames clarification as a step toward strengthening the work, not as a challenge to the reviewer's expertise.
• Keep the request concise and structured, and always acknowledge what you do understand before asking about what remains unclear.

Understanding Reviewer Comments and Your Credibility

Peer review exists to improve the quality and integrity of published research. The Committee on Publication Ethics Core Practices describes peer review as a core obligation for journals, and it depends on honest, transparent communication between authors, editors, and reviewers. When you receive a vague comment, your response letter is a professional document that editors and reviewers read carefully. It shapes their perception of your competence, your openness to feedback, and your understanding of your own data.

The goal of a clarification request is not to expose a reviewer's ambiguity. The goal is to demonstrate that you have read the comment carefully, considered it against your methods and results, and identified the precise point where you need more information to respond fully. This approach signals rigor. It shows that you treat the review process as a substantive conversation about evidence and interpretation.

A poorly worded request can create the opposite impression. If you ask a question that is already answered in the manuscript, or if you ask without showing your own reasoning, you risk appearing careless. If you phrase the request as a confrontation, you risk alienating the reviewer and the editor. The framework below gives you a structured way to avoid those outcomes.

At a Glance

Core Principles for Requesting Clarification

Separate the Comment from the Person

A reviewer comment is feedback on a manuscript, not a judgment of your identity or your worth as a researcher. The National Library of Medicine Research Methods Resources gateway provides access to biomedical texts that emphasize the importance of methodical, evidence-based responses to research questions. The same principle applies to your response letter. Treat the comment as a problem to solve, not a personal attack.

Show Your Work Before You Ask

The most effective clarification requests include a brief statement of what you have already done. This demonstrates that you have not simply forwarded the comment to a coauthor or ignored it. For example, if a reviewer asks about your sample size justification, you can state the power calculation you used and then ask whether the reviewer is concerned about the effect size assumption or the statistical test itself.

Ask One Question at a Time

A clarification request that contains multiple embedded questions is hard to answer and can make you look disorganized. If you have three separate uncertainties, write three separate sentences. Each one should be specific and answerable.

Use the Reviewer's Own Language

When you quote the reviewer's comment, use their exact words. This prevents misunderstanding and shows that you are responding to what they actually wrote, not to your interpretation of it. It also gives the editor a clear record of the exchange.

Frame the Request as a Path to Completion

Your request should make clear that you intend to revise the manuscript and that the clarification is a necessary step. This is different from asking the reviewer to do your work. You are asking for the information you need to complete a revision that meets the journal's standards.

Practical Workflow for Responding to a Vague Comment

Step 1: Read the Comment in Full Context

Before you write anything, read the entire review. A comment that seems vague in isolation may be clarified by a later comment or by the editor's summary letter. The EQUATOR Network provides reporting guidelines that can help you understand what information a reviewer might expect in a specific type of study. If the comment relates to a reporting item, the guideline can tell you what the reviewer is likely looking for.

Step 2: Identify the Specific Point of Confusion

Write down exactly what you do not understand. Is it the requested analysis? The interpretation of a result? The relevance of a reference? The wording of a claim? The more precise you can be about your own confusion, the easier it is for the reviewer to answer.

Step 3: Draft a Response That States What You Understand

Begin your response by stating what you do understand about the comment. This shows that you have engaged with it. For example, "We understand the reviewer to be asking about the potential for confounding by age." Then state what you have done in response, such as "We have already adjusted for age in the model shown in Table 3."

Step 4: Ask a Specific Question

After stating what you understand and what you have done, ask the specific question. For example, "Could you clarify whether you are requesting a separate sensitivity analysis restricted to participants under 50 years of age, or whether you want us to report the age-adjusted model in a different format?"

Step 5: Keep the Tone Professional and Neutral

Avoid language that sounds defensive, sarcastic, or dismissive. Phrases like "We are confused by this comment" can sound accusatory. Instead, use "We would like to clarify" or "We want to ensure we address the reviewer's concern fully."

Step 6: Send the Response to the Editor, Not the Reviewer

In most journals, you send your response letter to the editor, who forwards it to the reviewer. The Committee on Publication Ethics Core Practices describes the editor's role in managing the peer review process. Your response should be addressed to the editor, and it should be written so that the editor can understand the exchange even if the reviewer does not respond.

Language Templates for Specific Situations

When the Reviewer Asks for a Test You Did Not Run

"We used a linear mixed model to account for repeated measures. We did not run a separate analysis for each time point. If the reviewer is requesting a time-stratified analysis, we would be happy to add it. Could you please confirm whether that is the intended request?"

When the Reviewer Says a Claim Is Unsupported

"We have cited the claim to the results in Table 2. Could you please indicate which specific comparison or outcome you consider unsupported? We want to ensure we address the concern directly."

When the Reviewer Requests a New Analysis That Seems Out of Scope

"We agree that a subgroup analysis could be informative. However, our sample size for the subgroup is small, and we are concerned about the stability of the estimates. Could you please clarify whether you want us to report this analysis with a caution about the sample size, or whether you have a different analysis in mind?"

When the Reviewer's Comments Contradict Each Other

"Comment 3 requests that we remove the sensitivity analysis, while comment 7 asks us to expand it. We want to follow the reviewer's guidance. Could you please advise which direction you prefer?"

When the Reviewer Uses a Term You Do Not Recognize

"We are not familiar with the term 'fractional polynomial' as used in the comment. Could you please clarify whether you are referring to the multivariable fractional polynomial approach, or to a different method?"

Options and Tradeoffs in Your Response

Option 1: Ask for Clarification Immediately

This is the most direct approach. You write to the editor and ask for clarification before you begin your revision. The advantage is that you do not waste time on a revision that may be wrong. The disadvantage is that it adds a round of communication to the process, and the reviewer may not respond quickly.

Option 2: Make a Reasonable Assumption and State It

You can make a reasonable assumption about what the reviewer wants, complete the revision, and state your assumption in the response letter. This shows initiative and can save time. The risk is that you guess wrong and have to revise again.

Option 3: Do Both

You can ask for clarification and, in the same letter, state that you are proceeding with a reasonable assumption in the meantime. This is often the most efficient approach. It shows that you are not waiting passively, and it gives the reviewer a chance to correct you before the next round.

Records and Measurements for Your Response

Keep a Copy of the Original Review

Save the original review letter in a separate file. You will need it to quote the reviewer's exact words and to track your responses.

Create a Response Table

A response table with columns for the reviewer comment, your response, and the location of the change in the manuscript is a standard tool. It helps you track every comment and ensures you do not miss one.

Track Your Revision Timeline

Note the date you received the review and the date you sent your clarification request. This is useful if the editor asks about your progress or if you need to request an extension.

Record the Editor's Response

When the editor responds to your clarification, save that message. It is part of the record of the review process and may be useful if there is a later dispute about what was requested.

Common Failure Patterns in Clarification Requests

Asking a Question That the Comment Already Answers

This is the most common failure. It happens when you do not read the comment carefully or when you respond to a single sentence without reading the surrounding paragraph. Always read the full comment before you ask.

Asking a Question That Is Too Broad

A question like "What do you mean?" is not useful. It forces the reviewer to repeat the comment and makes you look like you have not engaged. A better question is "We have interpreted this comment as a request for a sensitivity analysis. Is that correct?"

Asking a Question That Sounds Defensive

Phrases like "We are not sure why the reviewer thinks this is a problem" or "We believe our approach is correct" can sound defensive. They shift the focus from understanding to defending. Keep the focus on the manuscript and the evidence.

Asking a Question That Is Actually a Disagreement

If you disagree with the reviewer, do not disguise your disagreement as a request for clarification. State your disagreement directly and provide your reasoning. The Committee on Publication Ethics Core Practices describe the importance of transparent communication in the review process. A direct disagreement is more respectful than a passive-aggressive question.

Asking a Question That Is a Request for the Reviewer to Do Your Work

If you ask the reviewer to provide the exact analysis you should run, you are asking them to do your work. Instead, state what you have done and ask whether a specific alternative would address their concern.

Quality and Welfare Controls in Your Response

Check Your Tone Before You Send

Read your response out loud. If it sounds like you are annoyed or defensive, rewrite it. The tone should be neutral and professional.

Check Your Facts

Make sure that any statement you make about your own methods or data is accurate. If you say you did not run a test, make sure that is true. If you say you did, make sure you can point to the table or figure.

Check Your Quotations

Make sure you have quoted the reviewer's comment exactly. A misquotation can create a new problem.

Check Your Response Table

Make sure that every comment in the review has a corresponding response. If you are asking for clarification on one comment, make sure you have not left other comments unaddressed.

Limitations and Boundaries of This Approach

The Reviewer May Not Respond

A reviewer may not respond to your clarification request, or the editor may decide to make a decision without further input. In that case, you have to make a decision based on the information you have. You can state your assumption in your response letter and proceed.

The Editor Has the Final Say

The editor is the person who makes the decision about your manuscript. The Committee on Publication Ethics Core Practices describe the editor's role in managing the review process. If the reviewer does not respond, the editor may make a decision based on the original review. Your clarification request is a tool, not a guarantee.

The Reviewer May Be Wrong

Reviewers are human and can make mistakes. If you believe the reviewer is wrong, you can say so respectfully. The Committee on Publication Ethics Core Practices describe the importance of handling disputes fairly. You can provide evidence for your position and ask the editor to consider it.

The Process Is Not a Negotiation

Your goal is not to win an argument. Your goal is to produce a manuscript that meets the journal's standards and that is scientifically sound. If you disagree with a reviewer, you can state your disagreement, but you should also be prepared to make a change if the editor decides it is necessary.

Professional Escalation Criteria

When to Contact the Editor Directly

You should contact the editor directly if you believe the review process has been unfair, if you believe a reviewer has made a factual error that affects the decision, or if you believe the review contains a conflict of interest. The Committee on Publication Ethics Core Practices describe the journal's responsibility to handle allegations of misconduct and to manage the review process fairly.

When to Contact the Journal Office

If you have a question about the journal's policies, such as the data sharing policy or the authorship requirements, you can contact the journal office directly. The NIH Data Management and Sharing Policy describes the expectations for data sharing in NIH-funded research, and your journal may have similar requirements.

When to Contact Your Institution

If you believe that a reviewer has made an inappropriate request, such as asking you to include a citation that is not relevant, you can contact your institution's research integrity office. The Committee on Publication Ethics Core Practices describe the responsibility of institutions to handle research misconduct.

When to Contact a Funding Agency

If you are funded by the NIH, you may need to report a change in your research plan or a delay in your publication. The NIH Grants and Funding website provides information about grant management and reporting requirements. If your manuscript is delayed because of a review process, you may need to inform your program officer.

Decision Framework for Choosing Between Clarification and Assumption

When you receive a vague reviewer comment, you face a decision that shapes the entire revision timeline. The choice between asking for clarification and proceeding on a reasonable assumption depends on four factors you can assess before you write anything. This framework gives you a structured way to make that decision instead of reacting emotionally to the comment.

Factor 1: Cost of a Wrong Assumption

Estimate what happens if you guess incorrectly. If the wrong assumption means redoing a statistical analysis, recollecting data, or rewriting a major section, the cost is high and clarification is justified. If the wrong assumption means adjusting a sentence or adding a reference, the cost is low and you can proceed. Assign a rough cost level to each vague comment. High-cost comments include those that touch your primary outcome, your main statistical model, or your interpretation of the central finding. Low-cost comments include wording suggestions, citation requests, or minor presentation changes.

Factor 2: Reversibility of the Revision

Some revisions are easy to reverse. Adding a sensitivity analysis, for example, can be removed if the reviewer did not want it. Other revisions are difficult to reverse. Changing your primary analysis, reclassifying participants, or altering your inclusion criteria creates a cascade of changes throughout the manuscript. If the revision is reversible, proceed with an assumption. If it is difficult to reverse, ask first.

Factor 3: Availability of a Defensible Default

A defensible default is a choice you can justify to the editor even if the reviewer meant something else. For example, if a reviewer asks for a subgroup analysis and you have a prespecified subgroup that is clinically meaningful, that is a defensible default. If the reviewer asks for a test you have never seen and you cannot name a standard alternative, you do not have a defensible default and you should ask.

Factor 4: Signal Strength in the Comment

Some vague comments contain a weak signal about what the reviewer wants. The signal may come from the surrounding comments, the editor's summary, or the reporting guideline relevant to your study type. The EQUATOR Network provides reporting guidelines that can help you decode what a reviewer likely expects for your study design. If the signal is strong enough to name a specific alternative, proceed. If the signal is absent, ask.

Applying the Framework

Score each vague comment on the four factors. A comment that is high cost, difficult to reverse, has no defensible default, and no signal warrants a clarification request before revision. A comment that is low cost, reversible, has a defensible default, and a clear signal should be handled by stating your assumption and proceeding. Mixed scores require judgment. When in doubt, ask, because the cost of a wrong assumption on a high-stakes comment is greater than the delay of one email exchange.

The Two-Column Decision Record

Create a simple record for each vague comment. In the left column, write the reviewer comment exactly as it appears. In the right column, write your decision and the reasoning based on the four factors. This record serves two purposes. First, it forces you to think through each comment systematically instead of lumping all vague comments together. Second, it gives you a document you can share with coauthors so everyone agrees on the approach before you write to the editor.

When to Use the Hybrid Approach

The hybrid approach, where you ask for clarification and state your assumption in the same letter, works best when the comment is high cost but you have a defensible default. For example, if a reviewer asks for a different statistical approach and you have a standard alternative that is defensible, you can state that you are proceeding with that alternative while asking the reviewer to confirm. This approach is less useful when you have no defensible default, because you would be proceeding on a guess.

Common Decision Errors

The most common error is treating all vague comments the same way. Some researchers ask for clarification on every vague comment, which creates unnecessary delays and can annoy editors. Others proceed on assumptions for every comment, which risks a major revision that misses the mark. The framework prevents both errors by forcing a comment-by-comment assessment.

A second error is ignoring the editor's summary letter. Editors often provide context that clarifies vague reviewer comments. Read the editor's letter before you apply the framework. The Committee on Publication Ethics Core Practices describe the editor's role in managing the review process, and that role often includes synthesizing or prioritizing reviewer comments.

A third error is making the decision alone. If you have coauthors, especially a senior author or a statistician, involve them in the decision. A statistician can tell you whether a requested analysis is standard or unusual. A senior author can tell you how the journal typically handles such requests. The framework gives you a shared language for that discussion.

Recording Your Decision Rationale

For each vague comment, write one sentence that states your decision and the dominant factor. For example, "Proceed with assumption because the revision is reversible and we have a defensible default" or "Request clarification because the cost of a wrong assumption is high and there is no signal in the comment." This sentence becomes part of your response table and gives the editor a clear picture of your reasoning.

Escalation Within the Framework

If you apply the framework and still cannot decide, escalate to the editor. This is different from asking the reviewer. The editor has the authority to make a decision about the manuscript and can often resolve ambiguity more quickly than a reviewer. The Committee on Publication Ethics Core Practices describe the editor's responsibility to manage the review process fairly. A brief note to the editor that states your assessment of the comment and asks for guidance is appropriate when the framework does not produce a clear answer.

Limitations of the Framework

The framework does not guarantee that your assumption will be correct or that the reviewer will respond to your clarification. It is a decision aid, not a prediction tool. The National Library of Medicine Research Methods Resources gateway provides access to texts on research methodology that emphasize the importance of transparent decision-making in research. Documenting your decision rationale is part of that transparency. If the reviewer later says your assumption was wrong, you can point to your documented reasoning and revise accordingly.

Frequently Asked Questions

How do I ask a reviewer for clarification without sounding incompetent?

You ask a specific question that shows you have read the comment, understood the context, and identified the exact point of confusion. You state what you have done and then ask a focused question. You do not ask a general question like "What do you mean?" and you do not ask the reviewer to do your work.

What if the reviewer does not respond to my clarification request?

If the reviewer does not respond, you have to make a decision based on the information you have. You can state your assumption in your response letter and proceed with your revision. The editor has the final say, and you can ask the editor to make a decision if the reviewer does not respond.

Should I ask for clarification before or after I start my revision?

You can do both. You can send a clarification request and state that you are proceeding with a reasonable assumption in the meantime. This is often the most efficient approach because it does not waste time while you wait for a response.

Can I disagree with a reviewer in my response?

Yes, you can disagree with a reviewer. You should state your disagreement directly and provide evidence for your position. The Committee on Publication Ethics Core Practices describe the importance of respectful communication in the review process. A direct disagreement is better than a vague question.

How long should my clarification request be?

Your clarification request should be as short as possible while still being specific. A few sentences are usually enough. You do not need to repeat the entire review or your entire response. You only need to state what you understand, what you have done, and what you are asking.

What if the reviewer's comment is about my data and I cannot share the data?

If the reviewer is asking about your data, you can explain your data sharing plan. The NIH Data Management and Sharing Policy describes the expectations for data sharing in NIH-funded research. If you cannot share the data, you can explain why and ask the reviewer to clarify what they need.

How do I handle a reviewer who asks for a citation that I cannot find?

You can ask the reviewer to provide the specific citation they are referring to. You can also state that you have searched the literature and have not found a citation that supports the claim. The National Library of Medicine Research Methods Resources can help you search for relevant literature.

What if the reviewer's comment is about my authorship or my identity?

If the reviewer is asking about your authorship or your identity, you can refer to the ORCID for Researchers page to understand how to manage your researcher identity. If you believe the comment is inappropriate, you can contact the editor directly.

Using the Evidence

Related Articles

• The Role of the Research Ethics Committee: What Researchers Need to Know
• Open Access Practices for Researchers: A Guide
• Epidemiological Study Designs: An Overview for Researchers
• Open Science Practices: A Guide for Researchers
• Data Management Plan Template: A Practical Guide for Researchers

References and Further Reading

• Research Methods Resources. National Library of Medicine.
• EQUATOR Network. EQUATOR Network.
• Core Practices. Committee on Publication Ethics.
• NIH Grants and Funding. National Institutes of Health.
• ORCID for Researchers. ORCID.
• Data Management and Sharing Policy. National Institutes of Health.
• NCBI Literature Resources. National Center for Biotechnology Information.
• PubMed. National Library of Medicine.

This article is educational and does not replace institutional policy, professional advice, or applicable safety and regulatory requirements.