First-author

What is a first-author?

A first-author is the person listed first in the author byline of an academic publication. They are generally recognised as the primary contributor and may have led the study design, data analysis, manuscript drafting and coordination with co-authors. In many disciplines, the position signals scientific leadership, although the exact meaning depends on the field and the publication’s contribution statement.

First-author status applies to a specific publication rather than to a person’s career as a whole. An individual may be first author on one paper, a middle author on another and senior or corresponding author elsewhere.

Why does first-author status matter in medical affairs?

First-author publications can help medical affairs teams understand who has led relevant research rather than only participated in it. They are often considered in KOL mapping, expert profiling and Rising Star identification because repeated first authorship may indicate subject expertise, research activity and growing scientific independence.

The signal should not be used alone. Its importance varies by discipline, career stage, study design and author-order convention. Teams should interpret it alongside publication relevance, study quality, collaboration patterns and other evidence of scientific contribution.

How is first-author status identified and assessed in practice?

First authorship is usually identified from the order of names in the publication record. A structured assessment may then consider:

• whether the person is listed first or shares first authorship
• the subject matter and relevance of the research
• the person’s stated contributions to design, analysis and writing
• the publication type, such as original research, review or case report
• the recency and consistency of first-author activity
• the quality and standing of the publication venue

In bibliometrics, teams can count first-author outputs or apply them as one component of a wider scoring framework. Contribution notes and equal-contribution statements may require review of the full publication, as basic metadata does not always capture them accurately.

Does first-author always mean the person contributed the most?

No. First position generally indicates primary contribution, but author-order conventions differ between disciplines, institutions and research groups. Some fields use contribution-based order, while others place greater significance on the final author or use alphabetical ordering. Large collaborative studies may also follow consortium-specific arrangements.

The author byline is therefore an indicator, not definitive proof of contribution. Where the distinction matters, teams should review the author contribution statement, study context and any shared-authorship note rather than infer leadership from name order alone.

How should joint first authorship be handled?

Joint or co-first authorship occurs when two or more authors are declared to have contributed equally, even though one name must appear first in the byline. This is normally stated in a footnote or contribution statement.

For analysis, all authors explicitly designated as equal first authors should be recorded as such. Counting only the first visible name can understate another researcher’s role. Teams should also document whether their data source captures shared status, particularly when profiles or rankings are generated automatically.

How does first-author status differ from related publication measures?

First-author identifies a person’s position and likely role on one publication. Corresponding-author identifies responsibility for communication about the manuscript and does not necessarily indicate the largest scientific contribution. Senior or last-author status often suggests oversight or leadership in some disciplines, but this convention is not universal.

First authorship also differs from publication volume, citation impact and journal standing. Those measures describe productivity, influence or venue rather than contribution to an individual paper. A sound publication strategy and expert assessment should consider these signals together, with first-author status used as evidence of research leadership rather than a standalone measure of authority.