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A randomised-controlled trial of two educational modes for undergraduate evidence-based medicine learning in Asia.

ABSTRACT: BACKGROUND: As the overall evidence for the effectiveness of teaching of evidence based medicine (EBM) is not strong, and the impact of cultural and societal influences on teaching method is poorly understood, we undertook a randomised-controlled trial to test the effectiveness and learning satisfaction with two different EBM teaching methods (usual teaching vs. problem based learning (PBL)) for undergraduate medical students. METHODS: A mixed methods study that included a randomised-controlled crossover trial with two intervention arms (usual teaching and PBL) and a nested qualitative study with focus groups to explore student perceptions of learning and to assess the effectiveness and utility of the two teaching methods.All 129 second-year medical students at the University of Hong Kong in 2007.The main outcomes measures were attitudes towards EBM; personal application and current use of EBM; EBM knowledge; future use of EBM. RESULTS: PBL was less effective at imparting knowledge than usual teaching consisting of a lecture followed by a group tutorial. After usual teaching students showed improvement in scores for 'attitudes towards EBM', 'personal application and current use of EBM' and 'EBM knowledge, which were not evident after PBL. In contrast to the usual teaching, students found PBL difficult as they lacked the statistical knowledge necessary to support discussion, failed to understand core concepts, and lost direction. CONCLUSION: The evidence presented here would suggest that the teaching of EBM within an Asian environment should adopt a format that facilitates both the acquisition of knowledge and encourages enquiry.

SUBMITTER: Johnston JM

PROVIDER: S-EPMC2761870 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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A randomised-controlled trial of two educational modes for undergraduate evidence-based medicine learning in Asia.

Johnston Janice M JM Schooling C Mary CM Leung Gabriel M GM

BMC medical education 20090929

<h4>Background</h4>As the overall evidence for the effectiveness of teaching of evidence based medicine (EBM) is not strong, and the impact of cultural and societal influences on teaching method is poorly understood, we undertook a randomised-controlled trial to test the effectiveness and learning satisfaction with two different EBM teaching methods (usual teaching vs. problem based learning (PBL)) for undergraduate medical students.<h4>Methods</h4>A mixed methods study that included a randomise ...[more]

PMID: 19785777

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Project description:BACKGROUND:Provision of relevant pre-learning materials has been shown to increase student engagement and improve outcomes in medical education. This non-randomised study attempts to quantify the educational gains, and relative efficacy of video and written pre-learning materials, in ophthalmology undergraduate teaching. METHODS:Ninety-eight final year medical students were contacted prior to their three-day ophthalmology placements at a British tertiary ophthalmology unit. All participants were sent welcome packs prior to arrival requesting they undertake 90?min of work focusing on a list of specified ophthalmic conditions. One cohort (N?=?33) were sent written materials, another (N?=?32) was provided with video materials and a third cohort (N?=?33) were not sent any materials. On arrival participants completed a simple knowledge test, a questionnaire estimating the time they spent preparing for the placement and a self-reported knowledge score. The teaching on placement was the same for all cohorts. At the conclusion of each placement participants completed a challenging knowledge test, a clinical skills test and repeated self-reported knowledge scores. RESULTS:Eighty seven percent of students receiving specified materials claimed to complete pre-placement work compared to 70% of those receiving learning outcomes alone (p?=?0.05). Students receiving learning materials scored higher in the post-placement tests of knowledge (p?<?0.001), 74.8% (72.4-77.2%) vs 63.6% (95%CI 59.3-67.9%) and skills (p?=?0.04), 86.9% (83.9-89.9%) vs 81.3% (77.2-85.4%). Students using video resources outperformed students using written materials in their visual acuity assessment test (p?=?0.03), 90.4% (86.6-94.2%) vs 83.6% (80.1-87.1%) whilst those receiving written rather than video material performed better in the end of placement knowledge test (p?=?0.03), 77.7% (74.3-81.1%) vs 72.0% (68.9-75.1%). CONCLUSION:This study showed that providing pre-placement learning materials improves undergraduates' commitment and achievement. Written materials better facilitate knowledge acquisition while video materials preferentially promote skill acquisition. This is a novel demonstration within ophthalmology and can help address the imbalance between the expectations placed on undergraduates and the resources committed to ensuring they are met.

Project description:OBJECTIVE:Fostering clinical reasoning is a mainstay of medical education. Based on the clinicopathological conferences, we propose a case-based peer teaching approach called clinical case discussions (CCDs) to promote the respective skills in medical students. This study compares the effectiveness of different CCD formats with varying degrees of social interaction in fostering clinical reasoning. DESIGN, SETTING, PARTICIPANTS:A single-centre randomised controlled trial with a parallel design was conducted at a German university. Study participants (N=106) were stratified and tested regarding their clinical reasoning skills right after CCD participation and 2 weeks later. INTERVENTION:Participants worked within a live discussion group (Live-CCD), a group watching recordings of the live discussions (Video-CCD) or a group working with printed cases (Paper-Cases). The presentation of case information followed an admission-discussion-summary sequence. PRIMARY AND SECONDARY OUTCOME MEASURES:Clinical reasoning skills were measured with a knowledge application test addressing the students' conceptual, strategic and conditional knowledge. Additionally, subjective learning outcomes were assessed. RESULTS:With respect to learning outcomes, the Live-CCD group displayed the best results, followed by Video-CCD and Paper-Cases, F(2,87)=27.07, p<0.001, partial η2=0.384. No difference was found between Live-CCD and Video-CCD groups in the delayed post-test; however, both outperformed the Paper-Cases group, F(2,87)=30.91, p<0.001, partial η2=0.415. Regarding subjective learning outcomes, the Live-CCD received significantly better ratings than the other formats, F(2,85)=13.16, p<0.001, partial η2=0.236. CONCLUSIONS:This study demonstrates that the CCD approach is an effective and sustainable clinical reasoning teaching resource for medical students. Subjective learning outcomes underline the importance of learner (inter)activity in the acquisition of clinical reasoning skills in the context of case-based learning. Higher efficacy of more interactive formats can be attributed to positive effects of collaborative learning. Future research should investigate how the Live-CCD format can further be improved and how video-based CCDs can be enhanced through instructional support.

Dataset Information

A randomised-controlled trial of two educational modes for undergraduate evidence-based medicine learning in Asia.

Publications

A randomised-controlled trial of two educational modes for undergraduate evidence-based medicine learning in Asia.

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