What should physicians know about hypertension? The implicit knowledge requirements in the maintenance of...

The American Board of Family Medicine (ABFM) Maintenance of Certification process requires family physicians to have a core knowledge base in key areas such as hypertension and diabetes care but does not define this knowledge in specific terms. We developed a method of content analysis to evaluate what type of knowledge is assessed on the ABFM's Hypertension Self-assessment Module (SAM) to better understand what the implied knowledge of a family physician should be.

In this qualitative descriptive analysis, we categorized the 60 questions comprising the knowledge assessment portion of the Hypertension SAM, version 2.20.03, into diagnosis, treatment, or etiology/general knowledge questions. Diagnosis and treatment questions were graded for relevance to typical family practice. Diagnosis questions were coded regarding importance. Treatment questions were subdivided into drug or nondrug treatments. Drug treatment items were categorized as testing knowledge of safety/tolerability issues, effectiveness issues, or cost considerations.

The 60 questions represented 213 specific items of knowledge. Most (71%) of the items on the SAM focused on therapy, with the remainder evaluating knowledge of diagnosis issues or general knowledge. Of the therapy-related items, the items were evenly split between knowledge of safety/tolerability and knowledge of effectiveness (47.1% each). The remaining items required knowledge of nondrug therapy. No items evaluated knowledge of the relative cost of treatment or cost-effectiveness. With regard to the relevance of the tested information, only 70% of the items test knowledge that would be commonly needed in the practice of family medicine.

There is currently no consensus on the discrete set of skills and knowledge that should be held by a competent family physician. In the absence of a comprehensive set of goals and objectives, the knowledge content being assessed in the SAMs can at least inform teaching programs about what their learners will be required to know to maintain certification. For the content area of hypertension, most of the knowledge required was regarding drug treatment. Interestingly, 30% of the knowledge content being assessed was found to be neither important nor commonly needed in the care of patients. We recommend that more work be done to define the specific knowledge and skills required for a competent family physician and that future maintenance of certification modules be written to assess mastery of these core requirements.