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Related Experiment Videos

Searching multiple databases for systematic reviews: added value or diminishing returns?

C Stevinson1, D A Lawlor

  • 1Department of Exercise and Health Sciences, Centre for Sport, Exercise and Health, University of Bristol, Tyndall Avenue, Bristol BS8 1TP, UK. C.Stevinson@bristol.ac.uk

Complementary Therapies in Medicine
|January 15, 2005
PubMed
Summary
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For systematic reviews on exercise therapy, relying solely on Medline is insufficient. Combining Medline with specialized databases and expert consultation ensures comprehensive literature searches for cancer patients.

Area of Science:

  • Oncology
  • Rehabilitation Medicine
  • Evidence-Based Practice

Background:

  • Systematic reviews require comprehensive literature searches to minimize bias.
  • Medline is a primary database for biomedical literature, but may not capture all relevant studies.
  • Exercise therapy is an important intervention for cancer patients, necessitating thorough evidence synthesis.

Purpose of the Study:

  • To evaluate the effectiveness of searching specialized bibliographic databases in identifying additional relevant studies for a systematic review on exercise therapy.
  • To compare the yield of Medline searches with combined database searches for controlled trials of exercise interventions in cancer patients.

Main Methods:

  • Searches were conducted in Medline, Embase, Cochrane Library, CancerLit, Cinahl, PsychInfo, and SportDiscus.

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  • The review focused on identifying controlled trials of exercise interventions for cancer patients.
  • Reference lists and expert consultations were also utilized to supplement database searches.

    • Main Results:

    • A total of 749 publications were retrieved, with 18 meeting inclusion criteria.
    • Medline identified 83% (15 studies) of the relevant publications.
    • Specialized databases identified 17% (3 studies), and reference lists/expert contact yielded an additional 7 studies.

    Conclusions:

    • Searching Medline alone is likely inadequate for systematic reviews on exercise therapy or unconventional therapies.
    • A comprehensive search strategy combining Medline, specialized databases, reference checking, and expert consultation is the most effective approach.
    • This multi-pronged strategy ensures maximal retrieval of relevant studies for systematic reviews in oncology and rehabilitation.