Commentary

Journal clubs have been around for over 100 years.1 The earliest reference is found in a book of memoirs and letters by the British surgeon, Sir James Paget.2 The first formal journal club was established by Sir William Osler at McGill University in Montreal in 1875 'for the purchase and distribution of periodicals to which he could ill afford to subscribe as an individual'.3 Over the years, journal clubs have transformed to become an ubiquitous component of graduate medical and dental education; designed to teach critical appraisal skills to practitioners-in-training, and promote integration of best new evidence into clinical practice.

The current model of journal clubs is based on the premise that interactive learning, tailored to the needs of adult learners, will promote the uptake of current best evidence into clinical practice. Despite the widespread belief that journal clubs are effective avenues for bridging the gap between clinical research and practice, this tenet has rarely been tested.

The systematic review by Harris et al. addressed two questions: 'are journal clubs effective in supporting evidence based decision making?', and 'which elements of a journal club contribute to its effectiveness?'. In undertaking this review the authors took into account the educational methodology underlying concepts around adult learning, knowledge transfer and promotion of clinical behaviour change. The methodology of the systematic review itself was sound, albeit with some limitations that seem to be due to reporting rather than conduct. The overall strength of evidence was weak. Of the 18 studies identified, there were eight before-and-after studies, six questionnaires, one observational study, one case-control, one non-randomised and one randomised controlled trial. Duration of the studies ranged from three months to 15 years. Descriptions of the interventions were too heterogeneous to allow meta-analysis. The distinction between 'change in skill' (ie ability to apply new knowledge to clinical situations) and 'change in knowledge' (such as accessing and critically appraising the literature) was not consistent within or between studies.

Despite the limitations of the evidence, a qualitative summary identified two key messages in this review. The first is that to ensure success of a journal club, the format must be tailored to the educational needs of the learner - be they undergraduates, graduate students or practitioners. The second is that, while there is no ideal format for a journal club, there are components that contribute to its effectiveness in changing behaviour. These include mentoring, didactic support, the use of structured review instruments, adhering to the principles of adult learning, using multifaceted approaches to learning and integrating the learning with other academic and clinical activities. For example, undergraduate students may need didactic support for clinical epidemiology and biostatistics, with emphasis on learning critical appraisal skills. Journal clubs for residents should ensure the content is directly applicable to ongoing patient cases, with mentors providing support for application of critical appraisal skills in clinical settings. Continuing education for practitioners is likely to be most effective in promoting and maintaining changes in clinical practice if there are regular meetings of small groups in which strong relationships can be developed.