Evidence-based literature review: De-duplication a cornerstone for quality

doi:10.5662/wjm.v13.i5.390

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Dec 20, 2023 (publication date) through Feb 27, 2026

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World Journal of Methodology

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2222-0682

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Methodol. Dec 20, 2023; 13(5): 390-398
Published online Dec 20, 2023. doi: 10.5662/wjm.v13.i5.390

Evidence-based literature review: De-duplication a cornerstone for quality

Barbara Hammer, Elettra Virgili, Federico Bilotta

Barbara Hammer, Librarian at Medical Library, University of Bergen, Bergen 5020, Norway

Elettra Virgili, Federico Bilotta, Anesthesiology, Critical Care and Pain Medicine, University of Rome “La Sapienza”, Rome 00166, Italy

Author contributions: Hammer B contributed to the literature search; Virgili E involved in the extraction; Bilotta F participated in the project design data revision; Hammer B, Virgili E, and Bilotta F wrote the manuscript; and all authors have read and approved the final manuscript.

Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.

Corresponding author: Federico Bilotta, MD, PhD, Professor, Anesthesiology, Critical Care and Pain Medicine, University of Rome “La Sapienza”, viale del Policlinico, 155, Rome 00166, Italy. federico.bilotta@uniroma1.it

Received: October 10, 2023
Peer-review started: October 10, 2023
First decision: October 24, 2023
Revised: November 3, 2023
Accepted: November 29, 2023
Article in press: November 29, 2023
Published online: December 20, 2023
Processing time: 66 Days and 19.5 Hours

Core Tip

Core Tip: Effective de-duplication is crucial for maintaining the quality and credibility of systematic reviews. It ensures data accuracy, eliminates bias, reduces workload, and enhances trust in findings. However, challenges such as variability in data, database indexing, and resource constraints exist. Best practices include clear documentation, the use of reference management software, manual review when necessary, handling multiple versions of the same paper, addressing non-journal sources, and ethical considerations. Advancements like Deduklick and Automated Systematic Search Deduplicator offer promise for more accurate and efficient de-duplication methods. De-duplication is a fundamental step in evidence synthesis, contributing to transparent and reproducible research in systematic reviews.