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PROSPERO Protocol Registration Template

Two documents and two sheets that classify every protocol change the moment it happens, before the affected work makes the registry's own amendment option disappear.

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Amendment Register

Had the affected work already happened when this was decided?

Not yetAlready happened
Amendment — submit a registry revision now, before that work startsDeviation — nothing to submit; log it and disclose it in the manuscript

One fact sorts every change. A registry's own amendment mechanism updates the plan going forward; it cannot reach back and change work already done.

A prospective registry captures one snapshot: the review question and the planned methods, filed before screening starts. PROSPERO's own interface offers two ways to update that snapshot afterward, a minor amendment for administrative fields and a major revision for the review methods, and both only work forward: they update something not yet done. Neither can touch work already finished under the old plan. PRISMA 2020's own checklist routes that kind of change somewhere else entirely, item 24c, a manuscript paragraph, not a registry field.

The pack ships filled in for a review of structured discharge-planning interventions and 30-day readmission. Five protocol changes get logged across its timeline, sorted by one test: had the affected work already happened when the change was decided? Three had not: a database access change, a risk-of-bias tool swap, an added outcome, each submitted as a registry amendment first. Two had already happened: a primary-outcome definition narrowed after 9 of 14 studies were extracted, and a subgroup dropped after extraction finished on all 14. Neither had anywhere to go but the log.

Most PROSPERO guidance treats registration as one event: fill in the fields, submit, done. A few mention keeping a change log as good practice, without saying which changes even have a registry mechanism to use. This pack classifies at the moment of the decision, then routes each one correctly. It registers the plan; it does not build the search behind it, which the search strategy pack does, screen records, which the screening pack does, or appraise study quality, which the critical appraisal pack does.

Every sheet in the pack

Protocol Item Checklist and Amendment Register, filled in for the discharge-planning review.

Protocol Item Checklist

4 of 17 required fields, chosen to show which ones changed after registration.

FieldCurrent valueChanged since registration
SearchesMEDLINE, Embase and CENTRALYes — 2025-11-10
Primary outcomeUnplanned readmission, 30 daysYes — 2026-05-08
Risk of bias toolCochrane RoB 2Yes — 2026-01-15
Types of studyRandomized controlled trialsNo

Every changed field points at the Amendment Register row that explains it, so the checklist's current value and the log never drift apart.

Amendment Register

All 5 logged changes across the review's timeline.

DateFieldClassificationRegistry action
2025-11-10SearchesAmendmentMinor amendment
2026-01-15Risk of bias toolAmendmentMajor revision
2026-02-20Secondary outcomesAmendmentMinor amendment
2026-05-08Primary outcomeDeviationNone — already extracted
2026-06-12Subgroup analysisDeviationNone — already extracted

3 amendments went through the registry before the affected work started. 2 deviations never had a registry mechanism to use, because the extraction they affected was already finished when each was found.

What's in the pack

01

Protocol in Registry Format doc

Every field written in the order a registry form asks for it, ready to paste, always showing the current text with a dated note on anything changed since the original submission.

02

Protocol Item Checklist sheet

One row per required field with its current value, status and the date last confirmed, so a field silently left blank cannot pass for one deliberately marked not relevant.

03

Deviation Log Standard

The seven fields every logged change needs, and why the manuscript's disclosure paragraph is a query against this log rather than a document drafted separately at submission.

04

Amendment Register sheet

One dated row per change, classified by whether the affected work had already happened, with the reason, who decided it, and where it gets reported.

05

An amendment is decided before the work, a deviation is found after it

The standing space rule every prompt reads first, which is the one test that sorts every change into a registry submission or a log entry with nowhere else to go.

How to use it

  1. 1

    Send your protocol

    The review question and planned methods, plus title, timescale, funding and conflicts of interest, drafted straight into registry-ready fields.

  2. 2

    Log a change the moment it happens

    Whatever you report, big or small, gets classified immediately: had the affected work already happened when you decided this? That single fact sorts it.

  3. 3

    Amendments get submitted, deviations get logged

    Not yet happened gets drafted as a minor amendment or major revision for your registry's own interface. Already happened gets a dated log entry, because there is nothing to submit.

  4. 4

    Generate the disclosure paragraph once

    Every logged row, amendment or deviation, becomes one sentence in date order, so the manuscript's own protocol-and-registration section is a transcription, not a reconstruction.

Frequently asked questions

Is this template free?

Yes. Download the whole pack as Word documents and CSV sheets with no signup and no credit card. Edit with AI is a separate, optional path that has the agent draft the registry fields and log changes with you. The template library holds the rest of the packs.

What format are the downloaded files?

The two write-ups download as Word files and the two sheets as CSV, zipped together. Every format opens natively in Word, Pages, Google Docs, Excel, Numbers or Sheets, so nothing needs converting before your team can use it. Open the same pack in River instead, and it becomes a live Doc and Sheet you edit directly.

How is this different from just filling out the registry's own form?

The form captures one snapshot. This tracks what happens for the months afterward, and it applies the one test that decides where each change goes: had the affected work already happened when you decided it? Not yet is a registry amendment; already happened is a deviation with nowhere to go but a log and, later, the manuscript.

Does this only work for PROSPERO?

PROSPERO is the worked example because it is the largest registry for health-related systematic reviews and the one most readers of this page use. The same fields, the same amendment-versus-deviation test and the same disclosure paragraph apply to any registry, since the underlying reporting requirement comes from PRISMA 2020, not from one platform's form.

What's the actual difference between an amendment and a deviation?

Timing, not size. A change decided before the affected work starts is an amendment, submitted to the registry while there is still time. A change discovered only after that work is already done is a deviation; the registry's own revision mechanism has nothing forward-looking left to update, so it goes in the log and the manuscript instead.

Does River submit the amendment to the registry for me?

No. It drafts the revision note and the updated field text in the registry's own style, and you paste that into your registry account and submit it yourself, since that step requires your own login and your co-authors' approval. This space keeps the record of what was drafted, submitted and when.

What if I'm registering a review that's already under way?

Registration still works. Log any changes already made before today as accurately as you can reconstruct them, dated to when they actually happened rather than to today. That way the record does not read as though the review started clean and everything changed at once on registration day.

Register the plan, then track what actually happens to it

Send your review question and planned methods. Every field gets registry-ready text, and every change from here gets classified the moment you report it.

Edit with AI