Ethics approval statements: the three parts editors scan for.

A journal-ready ethics approval statement does three things in about two sentences: it names the committee that reviewed the study, gives the approval or protocol number, and states how participants consented. Here is the shortest complete version: "This study was approved by the Institutional Review Board of [University] (protocol no. 2024-0118), and all participants provided written informed consent." The wording bends for records reviews, surveys, and exempt research, but those three facts never leave.

What three elements does an ethics statement need?

The committee's official name, a reference number, and the consent type. Drop any one of the three and an editor cannot confirm that the study was reviewed at all.

Start with the name, and use the one the committee uses for itself. "Approved by the local ethics committee" reads as evasive, because no reader can look up a body that has no name. Write it in full with the institution attached: the Research Ethics Board of McGill University, or the Institutional Review Board of Cairo University Faculty of Medicine.

The reference number is what makes the statement checkable. The ICMJE recommendations ask authors to seek approval from an independent local, regional, or national review body, and to be ready to provide documentation when an editor requests it. An editor matches that number against the approval letter, so copy it from the letter, not from memory. If the journal's instructions ask for the approval date, add it.

Consent type is the third element, and it has to match the design. Written consent goes with a prospective study, a waiver with a records review, implied consent with an anonymous questionnaire. A chart review that claims signed consent from every patient is the kind of mismatch that turns a quick screening check into a slow question.

Where the statement sits is journal-specific. Frontiers in Neurology says it plainly in its author guidelines: "For experiments reporting results on animal or human subject research, an ethics approval statement should be included in the Materials and Methods section." Other journals gather the same text in a declarations block after the conclusion. When the instructions say nothing, the end of the Methods section is the usual home.

How do you word it for prospective, retrospective, and survey studies?

The study design sets the middle sentence. Prospective work pairs approval with consent taken before enrollment, retrospective work pairs approval with a waiver, and a survey pairs approval or exemption with the way the questionnaire captured consent.

For a prospective study: "This study was approved by the Research Ethics Committee of [Institution] (approval no. REC-2025-041). All participants gave written informed consent before enrollment, and the study followed the Declaration of Helsinki." The Helsinki line is not filler. The World Medical Association adopted the current revision of the declaration in October 2024, and the ICMJE ties the planning, conduct, and reporting of human research to it.

For a retrospective study: "This retrospective study was approved by the Institutional Review Board of [Hospital] (protocol no. 2024-388), which waived the requirement for individual informed consent because the analysis used de-identified records." Read who does the waiving. The committee waived consent, and the sentence reports that. You never grant the waiver yourself.

For a survey: "The survey protocol was approved by the [Committee] (reference no. 2025-SB-17). Participation was voluntary and anonymous, and completion of the questionnaire was treated as implied consent, as approved by the committee." Completion-as-consent is a consent procedure like any other, and the committee still has to approve it.

How do you state consent that was written, verbal, or waived?

Name the form of consent in one clause. When it was anything other than written, add who authorized the departure.

Written consent needs only the plain sentence: all participants provided written informed consent. Verbal consent needs two more pieces, the reason writing was impractical and the way the consent was documented, both with the committee's sign-off stated: "Because interviews were conducted by telephone, the committee approved verbal consent, which was audio-recorded." A waiver belongs to the committee alone: "The requirement for informed consent was waived by the [Committee] because the study involved no more than minimal risk and used existing anonymized data." A consent clause that names its authorizer survives review. One that does not is a query waiting to be written.

What do you write when the research is exempt?

Exempt is not the same as unstated. It means a review body looked at the protocol and issued an exemption determination, and your statement cites that determination the way another paper cites an approval.

In the United States, the Common Rule at 45 CFR 46.104 exempts certain survey, interview, and educational-test research: broadly, when responses are recorded so that participants cannot readily be identified, or when disclosure of their responses would not put them at risk of liability or of harm to their financial standing, employability, or reputation. The call is not yours to make. Institutions route it through the IRB office, which returns a letter and a number, and that number goes in the manuscript: "This study was determined to be exempt by the [University] Institutional Review Board under 45 CFR 46.104 (determination no. 2025-E-0042)."

Researchers with no formal IRB have a harder route, not a closed one. The ICMJE names a local, regional, or national body, in that order, so a health-ministry committee or a collaborating university's board can review the study when your own institution has none. If no body exists at all, state that in the manuscript, explain how the work followed the Declaration of Helsinki, and raise it in your cover letter as well; a guide to writing that letter covers where such notes belong. Editors can work with a situation that is explained. They cannot work with silence.

What happens when the statement is missing?

The paper stops. A human-subjects manuscript with no ethics statement is either returned with a query or desk rejected, depending on how much chasing the editorial office is willing to do.

The check comes early, at administrative screening, before a single reviewer opens the science. A missing declaration sits on every first-submission checklist because it is caught mechanically, and it belongs among the desk rejections you can see coming. In the better case, staff email you, you find the approval letter, and the clock restarts a couple of weeks later. In the worse case, the decision arrives with the box unticked and no offer to fix it. A pass against the journal's own requirements before you submit, whether a colleague's careful read or an automated check like Waraq, catches the gap while it still costs nothing.

Keep the approval letter with your submission files. Journals increasingly want the PDF next to the manuscript, and having the number, date, and committee letterhead in one place ends most queries before they start. Two sentences carry the load: who approved the study, under what number, and how people consented. Write them before you upload anything.