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Medline, CINAHL, EMBASE/Excerpta Medica, Cochrane Library, Digital Dissertations, Health Management Information Consortium, Index to Theses, ISI Proceedings, Pharmline, PsycINFO, Sociological Abstracts, and Web of Science (1970–2004); and reference lists.
Study selection and assessment:
English-language, randomised controlled trials (RCTs) that evaluated the effectiveness of printed (eg, leaflets) or electronic (eg, internet) written information about individual medicines (prescription or over-the-counter) provided to patients …
For correspondence: Dr D K Raynor, University of Leeds, Leeds, UK,
Source of funding: National Institute for Health Research Health Technology Assessment Programme.