Abstract Details

Title Measuring the Rate of Change in Core Evidence and Guidance in Neurology

Topic Neurologic ��ɫ��

Presentation(s) P04 - (-)

Poster/Presentation
Number 263

Objective

Background BACKGROUND: Although the exact rate of change of medical knowledge is unknown, it is estimated to double every two to nineteen years. Sixteen percent of highly cited research is also subsequently contradicted. It is unknown how often these changes occur in areas affecting clinical decision-making.

Design/Methods DESIGN/METHODS: DynaMed is a clinical reference using a systematic methodology for identifying, selecting, critically appraising, summarizing, and synthesizing evidence and guidelines to provide concise and precise representations of the most valid and relevant information for clinical decision-making at the point of care. Overview sections of 50 neurology topics (integrating the best evidence and guidance) will be analyzed for changes over 1-3 years. We will classify each change as resulting from new evidence or guidance (the primary outcome for this analysis) or from user feedback or quality improvement.

Results RESULTS: As of September 20, 2012 the management overviews of 15 neurology topics have been evaluated for a period of 0.91 to 2.52 years. Fourteen or fifteen topics had changes made based on new evidence or guidelines. Among 755 lines analyzed in these topic overviews, 207 (27%) were modified and 95 (13%) were deleted; 186 new lines (25%) were added. Of the 488 changes, 41 (8%) were due to new evidence and 168 (34%) were based on new guidelines. The annualized rate of change of overview content due to new evidence or guidelines was 18%.

Conclusions CONCLUSIONS: Eighteen percent of core neurology information guiding clinical practice changed within one year based on new evidence or guidelines.

Authors/Disclosures
Cynthia B. Brown, MD, FAAN PRESENTER	No disclosure on file
	No disclosure on file
	No disclosure on file
	No disclosure on file
Edgar Schuck	No disclosure on file

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