• Ming Tai-Seale, Cheryl Stults, Weimin Zhang, and Martha Shumway.
• Health Policy Research, Palo Alto Medical Foundation Research Institute, Palo Alto, CA 94301-2302, USA. Tai-SealeM@pamfri.org
• Patient Educ Couns. 2012 Mar 1; 86 (3): 322-8.

ObjectiveUncertainty is one key factor influencing physician and patient behavior. We examined the propensity to express uncertainty on mental health versus biomedical issues by elderly patients (>65 years) and physicians during primary care visits.Methods385 videotaped visits were coded according to "topics," which are issues raised by any participant during the visit. This approach allowed us to examine if uncertainty was expressed in biomedical, mental health or other topics, and the factors associated with expressions of uncertainty.ResultsWe found that patients expressed uncertainty in 20.21% of topics compared to physicians expressing uncertainty in 11.73% of topics discussed in all visits. Patients expressed uncertainty in 22% of biomedical and 46.5% (p<0.01) of mental health topics. Similar statistics were found in physicians' expression of uncertainty with more uncertainty being expressed with mental health topics (23.9%) than biomedical topics (12.56%, p<0.05).ConclusionPatients expressed more uncertainties than physicians during visits. Patients and physicians both expressed more uncertainties on mental health topics suggesting that patients and primary care physicians felt less knowledgeable or less confident about dealing with mental health issues.Practice ImplicationsUnderstanding the inherent uncertainties in medicine can help physicians and patients engage in more productive discussion about both biomedical and mental health topics.Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.

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