What is an ethics approval statement?

What the committee has actually approved

Ethics review happens before recruitment starts. The committee reads the protocol, consent materials and data handling plan and asks whether the risks to participants are justified by the value of the research and whether people are free to decline. Approval is for that protocol, so a major change, such as a new participant group or an added blood test, needs an amendment. The number on the poster points to that decision. It does not certify that the results are right, only that the study was permitted to run the way the methods describe, which is why the statement belongs with the methods. Approvals can also expire or carry conditions, such as annual progress reports, so the number on a poster should be the one that covered the period when the data were collected.

The bodies and figures by country

In Australia, NHMRC says there are approximately 200 HRECs across research organisations or operating independently, and institutions that maintain an HREC must register it with NHMRC; they review research under the National Statement on Ethical Conduct in Human Research 2023. In the United Kingdom, the Health Research Authority says there are more than 80 NHS Research Ethics Committees, which review around 6,000 research applications, with up to 15 members each, a third of them lay members; research outside the NHS usually goes to a university committee. In the United States, Institutional Review Boards review research under 45 CFR 46, the federal Common Rule.

When a statement is needed, and when it is not

Any study that recruits people, collects identifiable data about them or uses their tissue normally needs one. That includes surveys and interviews, not only clinical trials. Some low risk work is handled through a lighter pathway: an Australian institution may use a low risk review process, and the Common Rule allows certain research to be determined exempt. On a poster, say which applied rather than implying full review. Work with no human participants, such as a materials test or an analysis of published aggregate statistics, needs no ethics line, although quality improvement projects should check local rules, because some institutions still require a review or a registered exemption.

Mistakes that raise a reviewer's eyebrow

Writing ethics approval was obtained with no committee name or number is the most common, and it reads as if the author could not find the letter. Citing the wrong committee is next, usually a university committee when the data came from a hospital whose own committee approved the study. A third is printing a number for a different protocol from the same lab. A fourth is claiming approval for a secondary analysis that was never covered by the original consent. Finally, consent and approval are separate: a poster for a trial should mention both, and for a registered trial the registration number as well.

Where it shows up in the poster builder

None of the 40 poster layouts has a separate ethics block, and none needs one, because the natural home is the methods protocol. Thirty eight of the 40 layouts carry that labelled protocol block, which holds up to five entries, each a short label with a line of text. An entry labelled Ethics with the committee and number reads cleanly beside Design and Participants. The undergraduate research example does exactly that, giving the ethics line one of its five methods entries. On the two layouts that run the procedure as a process chain instead, put the statement in the section that describes the sample.

Wording that works in one entry

Keep it to the committee's full name, the reference number and, where relevant, the pathway. Approved by the Sandstone Bay University Human Research Ethics Committee (2025/0317). Written consent was obtained from all participants. If more than one committee approved a multi site study, name the lead committee and say that site approvals were obtained. Use the number exactly as it appears on the approval letter, including any prefix, since that is what an editor or examiner will search for. If space is short, drop the consent sentence before dropping the number.

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