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- Published
- Updated
Several papers from one study can address different scientific questions. If overlap in data, analyses and text remains unclear, readers may mistake related outputs for independent studies and overestimate the amount of separate evidence available.
The publication decision
Define each paper’s question, population, analysis scope and relationship to previous outputs. A different title or author list alone does not establish a new scientific contribution. Disclose related publications and concurrent submissions according to the target journal’s conditions. Review questions together within the publication plan to avoid unnecessary fragmentation of one coherent analysis.
Worked example
For example, two teams prepare similarly focused papers from the same cohort under different labels. The coordinators compare question and table maps, exposing overlap and any genuine additional contribution. Authors consider combining papers, separating scope or explicitly citing earlier work with a scientific rationale. Merely changing words to hide reused text is not a solution.
Coordination checks
- Compare publication questions and dataset coverage in a shared map.
- Explain overlapping analyses and text under the journal’s actual expectations.
- Check links that allow readers to recognise the common study.
Acceptance and boundaries
Acceptance means the additional contribution and shared data origin of each publication are understandable. This control does not prohibit secondary analyses generally. Assess journal policies and publication ethics against the particular situation. Do not present related results from one dataset as wholly independent evidence; keep the underlying research relationship visible in the final reporting.
Frequently asked questions
- Can a second paper use the same data?
- A meaningful different question and transparent linkage may be appropriate, subject to journal conditions.
- Does changing the title remove overlap?
- No. The substantive overlap in data, analysis and contribution still needs assessment.