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An adapted 'Ottawa' method allowed assessing the need to update topic areas within clinical practice guidelines
Käthe Goossen1, Dan Bieler2, Simone Hess1
1Institute for Research in Operative Medicine (IFOM), Faculty of Health, School of Medicine, Witten/Herdecke University, Ostmerheimer Str. 200, 51109 Cologne, Germany.
Objectives:
To adapt and evaluate a method for assessing the need to update guideline topic areas involving multiple recommendations.
Study Design And Setting:
The 'Ottawa method' uses literature signals to determine changes in evidence that trigger a need to update individual guideline questions. We adapted the Ottawa method to include a process for aggregating updating signals by topic area (e.g., resuscitation) and tested this method using the German guideline on the treatment of patients with severe/multiple injuries. This involved a focused systematic evaluation of current evidence to identify updating signals and classifying the need to update for each topic area. Then, we surveyed the guideline group online about the modified method.
Results:
We conducted focused literature searches for 37 topic areas and screened a mean of 97 abstracts per topic area in 2021. The need to update was high for eight (21.6%), intermediate for eight (21.6%), and low for 21 topic areas (56.8%) based on updating signals. The survey response rate was 56% (24/43). Most guideline group members (94%, 16/17 responders) would use the Ottawa method again but their comments identified some weaknesses.
Conclusion:
The modified Ottawa method is a suitable, efficient tool to generate evidence-based updating signals for guideline topic areas involving multiple recommendations. Further fine-tuning is recommended.
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