Weighing the gold standard: The breadth of emergency medicine core content covered by textbooks

Textbooks are often considered the criterion standard in medical education, but there is a growing preference for free open-access medical education (FOAM) content among learners. Despite FOAM's appeal, these resources often fall short in covering core content as comprehensively as the American Board of Emergency Medicine's 2019 Model of the Clinical Practice of Emergency Medicine (MCPEM), thereby sustaining the recommendation for textbook use. However, textbooks have limitations, such as how quickly content can become outdated. Notably, there is no evaluation of the comprehensiveness of emergency medicine (EM) textbooks in the literature.

This observational cross-sectional study compared Rosen's Emergency Medicine: Concepts and Clinical Practice 10th Edition (Rosen's) and Tintinalli's Emergency Medicine: A Comprehensive Study Guide 9th Edition (Tintinalli's) with the MCPEM subtopics. Each textbook chapter was reviewed for content alignment with MCPEM subtopics. The primary outcome was the proportion of MCPEM subtopics covered by each textbook. Secondary outcomes included the count of chapters covering each topic and their distribution relative to the core content weighting in the ABEM National Qualifying Examination (NQE).

Rosen's covered 95.3% of MCPEM subtopics (837 unique subtopics), and Tintinalli's covered 94.5% (826 unique subtopics). Both textbooks overrepresented topics like toxicology and psychobehavioral disorders compared to their weighting in the NQE. Relatively underrepresented topics included environmental disorders, cardiovascular disorders, renal and urogenital disorders, and traumatic disorders in Rosen's and other core competencies and cardiovascular disorders in Tintinalli's. The textbooks varied significantly in coverage of certain topics.

Both Rosen's and Tintinalli's comprehensively cover MCPEM subtopics, with some discrepancies in topic representation compared to the NQE. While textbooks offer depth and breadth, they may not fully align with the NQE content distribution. A diversified approach to EM education, combining traditional textbooks and FOAM resources may be required for comprehensive learning.