Randomised controlled trial of clinical decision support tools to improve learning of evidence based medicine in medical studentsBMJ 2003; 327 doi: https://doi.org/10.1136/bmj.327.7423.1090 (Published 06 November 2003) Cite this as: BMJ 2003;327:1090
Component items Mean (SD) score* Factor loading score† Personal application and use of evidence based medicine: How frequently do you access medical evidence from a textbook? 3.91 (1.19) 0.557 How frequently to you access medical evidence in general? 2.87 (1.01) 0.715 How frequently do you access medical evidence on the internet
(excluding Medline and Cochrane reviews)?
2.47 (0.88) 0.702 How frequently do you access medical evidence from original
1.96 (0.78) 0.705 How frequently do you access medical evidence from the
1.40 (0.66) 0.555 How frequently do you access medical evidence from secondary
sources such as ACP Journal Club, the journal Evidence Based
Medicine, POEMs (patient oriented evidence that matters) or
CATs (critically appraised topics)?
1.30 (0.60) 0.532 Future use of evidence based medicine: Compared to one year ago, how useful do you believe evidence
based medicine will be in your future practice as a doctor?
4.30 (0.91) 0.596 Compared to one year ago, how willing are you to practice
evidence-based medicine as a doctor in the future?
4.15 (0.87) 0.554 You personally appreciate the advantages of practising evidence
3.99 (0.68) 0.411 Evidence based medicine should be an integral part of the
undergraduate medical curriculum
3.95 (0.83) 0.516 I have a clear understanding of what evidence based medicine is 3.87 (0.88) 0.468 Compared to one year ago, how much do you support the
principles of evidence based medicine?
3.74 (1.02) 0.738 Compared to one year ago, how much do you support lifelong
learning using evidence based medicine techniques?
3.71 (1.10) 0.659 How much do you consider the practice of evidence based
medicine a routine part of your learning?
3.23 (1.01) 0.722 It is easy to find the evidence in order to practice evidence based
3.23 (0.91) 0.470 How much has the practice of evidence based medicine changed
the way you learn?
3.18 (1.01) 0.686 How easy or difficult has it been for you to practice evidence
based medicine as a medical student in the past month?
2.93 (0.88) 0.599
*Likert type scale (range 1-6)
†Derived from a principal components factor analysis with varimax rotation. Items into factors using pairwise deletion of missing values, values ³ 1, and factor loading scores ³ 0.4.9
Table B Changes in mean scores for control group (pocket card) compared with InfoRetriever group in multidisciplinary block. Values are mean differences (95% confidence intervals) unless stated otherwise
Scores Control group (pocket card) InfoRetriever group P value Factor scores: Personal application and current use of evidence based medicine 0.20 (0.03 to 0.36) 0.45 (0.29 to 0.61) 0.03 Future use of evidence based medicine 0.19 (0.03 to 0.35) 0.03 (- 0.14 to 0.21) 0.18 Individual item scores: On average, how often do you look up evidence
during or after clerking each patient on the ward
or in the clinic?
- 0.18 (- 0.38 to 0.01) 0.55 (0.25 to 0.86) <0.001 How frequently have you raised the role of
current best evidence during teaching rounds or
0.16 (- 0.12 to 0.45) 0.87 (0.29 to 0.73) 0.001 How much confidence do you have in your
clinical decision making?
0 (- 0.23 to 0.23) 0.30 (0.05 to 0.55) 0.07
Table C Changes in mean scores for Pocket card groups compared with InfoRetriever group after InfoRetriever intervention during multidisciplinary block at different stages of study. Values are mean differences (95% confidence intervals) unless stated otherwise
Scores Pocket card group InfoRetriever group P value Factor scores: Personal application and current use of evidence based medicine 0.66 (0.52 to 0.81) 0.45 (0.28 to 0.61) 0.051 Future use of evidence based medicine 0.30 (0.12 to 0.48) 0.03 (- 0.15 to 0.21) 0.04 Individual item scores: On average, how often do you look up
evidence during or after clerking each
patient on the ward or in the clinic?
0.30 (- 0.16 to 0.76) 0.55 (0.25 to 0.86) 0.36 How frequently have you raised the role
of current best evidence during teaching
rounds or bedside teaching?
0.88 (0.57 to 1.18) 0.87 (0.56 to 1.17) 0.96 How much confidence do you have in
your clinical decision making?
0.42 (0.22 to 0.62) 0.30 (0.21 to 0.52) 0.16
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