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Finding the GEMS In clinical research Paul Glasziou & Chris Del Mar.

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Presentation on theme: "Finding the GEMS In clinical research Paul Glasziou & Chris Del Mar."— Presentation transcript:

1 Finding the GEMS In clinical research Paul Glasziou & Chris Del Mar

2 Overview Background to EBM journal Your selection from 8 articles from 2002 Read, discuss, questions

3 JASPA* (Journal Associated Score of Personal Angst) J: Are you ambivalent about renewing your JOURNAL subscriptions? A: Do you feel ANGER towards prolific authors? S: Do you ever use journals to help you SLEEP? P: Are you surrounded by PILES of PERIODICALS? A: Do you feel ANXIOUS when journals arrive? * Modified from: BMJ 1995;311:1666-1668 0 - liar? 1-3 - normal range >3 - sick; at risk for polythenia gravis and related conditions

4 Rule 31 – Review the World Literature Fortnightly* *"Kill as Few Patients as Possible" - Oscar London 5,000 per day 1,000 per day 50 per day

5 Does CME help? Most CME does not improve clinical behaviour* Lectures worst; interactive, case-based better* Cost of CME in Oz 40,000 doctors x 150 hours/year @ $100/hour = $600 Million * Davis, JAMA 1999

6 Managing Information “Pull” and “Push” methods “Pull” – access information when needed “Just in Time” learning Use whenever questions arise EBM Steps: Question; search; appraise; apply “Push” - alerts us to new information “Just in Case” learning Use ONLY for important, new, valid research

7 Which Information to Push? Shaugnessy’s information rule Value = Validity x Relevance Effort Corollaries If it is not valid, it is of no value If it is not relevant, it is of no value

8 Validity Criteria 1.How can we alleviate the problem? (INTERVENTION/THERAPY) Randomised trial with > 80% followup 2.What is the risk of the problem? (PROGNOSIS) Inception cohort with > 80% followup 3.How accurate are the tests? (DIAGNOSIS) Appropriate spectrum with blinded Gold Standard 4.Systematic Reviews (of any question) Clear question; adequate search & inclusion criteria

9 Which Information to Push? Shaugnessy’s information rule Value = Validity x Relevance Effort Corollaries If it is not valid, it is of no value If it is not relevant, it is of no value

10 Assessing Relevance Valid articles from > 80 journals “voted” on Several GPs Appropriate specialist groups Two questions (Y/N & 0-10 ratings) Will this change your practice? Will it change the way you think about this? Responses compiled Selected articles sent for abstraction

11 Anatomy of a summary Declarative title Recalculated main results Structured abstract Expert Commentary

12 Bimonthly “just in case” journal Valid, Relevant & (almost) No Effort! www.evidence-basedmedicine.com


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