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Autor*innen: Keller, Carolin; Heck, Tamara; Rittberger, Marc
Titel: How many sources are needed? The effects of bibliographic databases on systematic review outcomes
Aus: Aizawa, Akiko; Mandl, Thomas; Carevic, Zeljko; Hinze, Annika; Mayr, Philipp; Schaer, Philipp (Hrsg.): Proceedings of the ACM/IEEE Joint Conference on Digital Libraries in 2022 (JCDL '22), hybrid conference, Cologne, Germany and online, June 20 - 24, 2022, New York; NY: Association for Computing Machinery, 2022 , S. #33
DOI: 10.1145/3529372.3530933
URN: urn:nbn:de:0111-dipfdocs-251802
Dokumenttyp: 4. Beiträge in Sammelbänden; Beiträge in Proceedings mit Peer-Review-System
Sprache: Englisch
Abstract: Systematic reviews are an established method to synthesize the current state of research for a specific question to make evidence-based decisions in research, politics, and practice. A key activity of a review approach is a systematic and comprehensive search strategy to find all potentially relevant literature. Although guidelines and handbooks address relevant methodological aspects and recommend strategies, the right choice of databases and information sources is unclear. Specifically in educational research, an interdisciplinary field, with no core database at hand and multiple potentially relevant sources available, investigators lack guidance for choosing the most appropriate ones. The presented study investigates the coverage in terms of scope, similarity and combination efficiency of seven multidisciplinary, discipline-specific and nationally focused databases. The evaluation is based on relevant assessed literature of two extensive recently published reviews in German educational research that serve as gold standard to evaluate the databases. Results indicate distinct variations in the databases, while also detecting databases with equal coverage. The paper contributes to guidance in choosing databases for educational review studies, while stressing that this process depends on a review's topical and geographical focus. Moreover, general implications resulting from the study refer to the relevance of database choice for review outcomes, the careful consideration of diverse search strategies beyond database search and a rigorous documentation of database inclusion and exclusion criteria. (DIPF/Orig.)
DIPF-Abteilung: Informationszentrum Bildung