Direct comparison
CRediT vs ICMJE: Roles vs. Authorship
ICMJE sets a minimum bar for authorship; CRediT records contributor roles. Neither is a checklist for excluding contributors who already qualify.
Side-by-side comparison
| Dimension | ICMJE Vancouver | CRediT |
|---|---|---|
| What it defines | Who counts as an author | What each contributor did |
| Origin | International Committee of Medical Journal Editors (1978, Vancouver Group) | Harvard / Wellcome / HHMI 2012 workshop; CRediT 1.0 published 2014; ANSI/NISO Z39.104-2022 |
| Number of items | Four criteria (all four required to be an author) | 14 roles (any number can apply per contributor) |
| Mutual exclusion | Yes — authorship vs acknowledgement is binary | No — one person can hold multiple roles |
| Machine-readable | No — narrative criteria | Yes — controlled vocabulary with stable URIs |
| Standard body | ICMJE (no formal national/international standardisation) | ANSI/NISO Z39.104-2022 (formal US national standard) |
| Adoption by publishers | Universal in biomedical publishing (~10,000 journals) | 50+ publishers, thousands of journals (2026) |
| Funder mandates | No formal funder mandate | Not formally mandated but increasingly expected on funded publications |
| Replaces the other? | No — defines authorship | No — defines contributions |
Common questions
FAQ
Should I use both?+
Yes. ICMJE defines who can be on the byline; CRediT describes what each person did. Most journals now require both — an author meeting ICMJE criteria gets listed, and their CRediT roles describe their actual contributions.
Can a CRediT contributor not be an author?+
Yes — that's the design. People who contributed (e.g., a research assistant who did data collection) but don't meet all four ICMJE author criteria can be acknowledged contributors with their CRediT roles listed.
Does CRediT solve authorship disputes?+
It reduces them. Explicit per-role attribution makes "who did what" visible, which prevents many disputes. ICMJE remains the eligibility criterion.
Can an editor or co-author remove someone from the author list because their CRediT role list looks thin?+
Not on that basis alone. ICMJE places responsibility for applying the four criteria with the author group, not with editors, and role count isn't one of the four criteria. If the person meets all four, a short CRediT role list doesn't disqualify them — it just means their documented contribution type is narrow, which is what CRediT is for.
Does an author have to draft manuscript text to meet ICMJE's criteria?+
No. ICMJE’s May 2023 wording update clarified that criterion 2 is met by drafting the work OR reviewing it critically for important intellectual content — critical review alone satisfies it. Requiring drafting specifically, on top of that, is a house policy choice, not an ICMJE requirement.
Going deeper
