How to Write a JAMA Cover Letter (With Template)

JAMA receives more than 6,000 manuscripts per year and publishes fewer than 5% of them. The editorial team desk-rejects most submissions within 5 to 10 business days. Your cover letter is what they read before deciding whether your paper deserves a closer look.

The JAMA cover letter has two jobs. First, make the clinical significance of your finding immediately obvious. Second, show that you understand what JAMA specifically publishes, which isn't the same as what NEJM or The Lancet publish.

What JAMA Is Actually Looking For

JAMA is a general internal medicine journal that also covers health services research, clinical epidemiology, comparative effectiveness, and practice-level clinical questions. That's broader than NEJM's predominantly RCT focus.

What unifies the scope: findings that are relevant to practicing physicians making real decisions. Not findings that are interesting to specialists. Not findings that advance mechanistic understanding. Findings that change what happens when a physician sees a patient.

The cover letter needs to make that connection explicit. Not implied. Not obvious from the title. Stated.

The Three Elements of a Strong JAMA Cover Letter

1. The clinical question. JAMA editors think in terms of clinical questions: "In patients with X, does Y produce better outcomes than Z?" State your clinical question explicitly in the first paragraph. This is more useful than a study description.

2. The answer and its magnitude. Specific finding. Specific numbers. Named clinical outcome. "Patients receiving Y had a 19% lower rate of Z compared to standard care over 12 months."

3. The population impact. JAMA cares about public health scope. How many patients are affected by this question? Quantify the burden when possible: "Condition X affects 12 million Americans annually."

JAMA Cover Letter Template

Dear JAMA Editors,
[Clinical question]: [State the clinical question the paper answers in one sentence.]
[Finding and magnitude]: [State the primary finding with specific data point, comparator, and outcome measure.]
[Population impact]: [Quantify the scope. How many patients, what burden, what current practice gap?]
[Study design in one sentence]: [Design, N, setting, primary endpoint.]
[Disclosure sentence]: "This [trial is registered at ClinicalTrials.gov / study follows STROBE/CONSORT guidelines] and was funded by [source]. No competing interests."
Sincerely,
[Corresponding author]

JAMA's Submission Categories: Format Accordingly

JAMA publishes several distinct article types with different word count limits and cover letter expectations.

Original Investigation: Your full-length clinical study. This is the primary research category. Cover letter should include clinical question, finding, and population scope as above.

Systematic Review and Meta-analysis: Should note the registration number (PROSPERO or similar), number of included studies, and the clinical question the evidence base addresses.

Research Letter: Short format (600-word limit, 1 table or figure). Cover letter can be brief (2 paragraphs): the finding and why it's important now. Don't write a full-length cover letter for a Research Letter.

Viewpoint: Opinion and analysis. Cover letter should identify the clinical debate or policy gap and what your perspective adds to it.

Matching your cover letter style and length to your submission type signals editorial awareness.

What a Strong Opening Paragraph Looks Like

Weak: "The management of hypertension remains a significant challenge in clinical practice, and there is a need for better evidence to guide treatment decisions in elderly patients."

Why it fails: Vague challenge, no question, no finding, no population specificity.

Strong: "Among adults over 75 with systolic hypertension, intensive blood pressure control (target <120 mmHg) reduced cardiovascular events by 25% compared to standard treatment (target <140 mmHg) in our randomized trial of 2,600 patients across 32 centers over 3.2 years."

Why it works: Specific population, specific intervention, specific comparator, specific outcome magnitude, specific design summary.

JAMA's Public Health Frame

JAMA editors are attuned to population-level burden. When you quantify the burden in the cover letter ("Condition X causes 80,000 deaths annually in the US"), you're giving the editor context to evaluate why their readership needs to know about this.

Don't overstate this. If your study is a phase 2 dose-ranging trial, you don't need to invoke national burden statistics. Match the burden framing to the scope of your finding.

The Statistical Rigor Signal

For RCTs, one sentence on statistical integrity can help: "The primary endpoint was prespecified, the analysis plan was registered before unblinding, and the sample size was powered to detect a clinically meaningful difference of [X]." This signals discipline before reviewers ask.

The Difference Between a JAMA Letter and a NEJM Letter

A NEJM cover letter leads with the landmark nature of the finding and its immediate guideline impact. Everything is oriented toward "this changes the standard of care."

A JAMA cover letter leads with the clinical question and the evidence quality. JAMA publishes rigorous clinical work across a broader evidence spectrum, including studies that don't change guidelines but do inform clinical decisions. The frame is "this answers an important clinical question well," not "this changes everything."

If you're submitting the same paper to both journals (sequentially, obviously), write two different cover letters. The framing that works for NEJM often reads as overclaiming at JAMA.

Common Cover Letter Mistakes at JAMA

Starting with the condition's burden instead of the finding. "Diabetes affects 37 million Americans..." is a common opener. Every JAMA editor knows diabetes is common. Start with your finding.

Using specialist abbreviations without definition. JAMA is a general medicine journal. SGLT2 should be defined on first use in the cover letter, not assumed.

Claiming "first study to show X" without context. First studies are common claims. Editors look for what was previously believed and what your finding adds. "Previous studies suggested X; our randomized trial of 3,200 patients shows definitively that Y" is more credible than "this is the first study to..."

Submitting without reporting guideline checklist. JAMA requires CONSORT for RCTs, STROBE for observational, PRISMA for reviews. Missing checklists cause submission rejection at the technical review stage before it reaches an editor.

After Submission: What to Expect

JAMA desk rejection decisions come within 5-10 business days. Papers sent to review typically get first decisions in 4-8 weeks. JAMA uses 2-3 peer reviewers per manuscript, with statistical review layered on for quantitative studies.

Revision periods are typically 30-60 days. JAMA's revision requests tend to be specific and methodological. The most common revision requests involve additional subgroup analyses, sensitivity analyses, and clearer reporting of the primary endpoint results.

After acceptance, production takes 3-6 weeks. JAMA is often aware of conference timing for major trial results and can coordinate publication timing with major medical meetings.

JAMA's Open Access Option

JAMA charges approximately $5,000 for immediate open access under a Creative Commons license. Many institutional agreements with the AMA cover this partially or fully. For researchers without institutional APC coverage, the subscription-access option (no APC) means JAMA publishes the paper behind a paywall but still indexes it in PubMed and MEDLINE with full discoverability.

If open access is an NIH or grant requirement, confirm your institution's AMA agreement before submission.

Final QA Before Submission

Use this checklist:

• Clinical question stated directly
• Primary finding with effect size is explicit
• Population burden sentence is accurate and restrained
• Submission type and letter length are aligned
• Reporting checklist mention included where relevant

A clean, disciplined letter outperforms an ornate one at JAMA.

Keep It Useful

JAMA editors reward letters that are immediately usable by clinicians and policy readers. Specific, concise, and decision-oriented language beats polished but vague prose every time.

Last Pass Before Upload

Read the letter out loud once. If any sentence sounds like marketing copy, cut it. JAMA responds better to direct, evidence-first language.

Implementation Checklist

Before submission, confirm three basics: claim clarity, methodological transparency, and journal-specific framing. Most avoidable rejections happen because one of these is weak in the first page.

Treat this as a production checklist, not an optional polish step. Small execution fixes often change editorial outcomes.

If you can summarize the clinical question and effect size in two lines, your letter is usually ready.

For teams under deadline pressure, this is usually the best operational sequence: tighten framing first, validate methods reporting second, then finalize submission package. That order reduces avoidable editorial friction and improves decision speed.

The Bottom Line

A JAMA cover letter earns a closer look by stating the clinical question, the answer with specific data, and the patient population affected. Keep it under 400 words. Match format to article type. Don't use NEJM framing for JAMA.

Sources

• JAMA instructions for authors: jamanetwork.com/journals/jama/pages/instructions-for-authors
• ICMJE recommendations: icmje.org/recommendations
• JAMA journal profile and metrics
• Is JAMA a good journal?

See also

• Is JAMA a good journal?
• NEJM cover letter guide
• How to write a journal cover letter