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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/32228

Title: Identification of factors associated with diagnostic error in primary care
Authors: Minué, Sergio
Bermúdez-Tamayo, Clara
Fernández Ajuria, Alberto
Martín-Martín, José Jesús
Benítez Hidalgo, Vivian
Melguizo, Miguel
Caro Martínez, Araceli
Orgaz, María José
Prados, Miguel Ángel
Díaz, José Enrique
Montoro, Rafael
Issue Date: 2014
Abstract: Background Missed, delayed or incorrect diagnoses are considered to be diagnostic errors. The aim of this paper is to describe the methodology of a study to analyse cognitive aspects of the process by which primary care (PC) physicians diagnose dyspnoea. It examines the possible links between the use of heuristics, suboptimal cognitive acts and diagnostic errors, using Reason’s taxonomy of human error (slips, lapses, mistakes and violations). The influence of situational factors (professional experience, perceived overwork and fatigue) is also analysed.
Methods Cohort study of new episodes of dyspnoea in patients receiving care from family physicians and residents at PC centres in Granada (Spain). With an initial expected diagnostic error rate of 20%, and a sampling error of 3%, 384 episodes of dyspnoea are calculated to be required. In addition to filling out the electronic medical record of the patients attended, each physician fills out 2 specially designed questionnaires about the diagnostic process performed in each case of dyspnoea. The first questionnaire includes questions on the physician’s initial diagnostic impression, the 3 most likely diagnoses (in order of likelihood), and the diagnosis reached after the initial medical history and physical examination. It also includes items on the physicians’ perceived overwork and fatigue during patient care. The second questionnaire records the confirmed diagnosis once it is reached. The complete diagnostic process is peer-reviewed to identify and classify the diagnostic errors. The possible use of heuristics of representativeness, availability, and anchoring and adjustment in each diagnostic process is also analysed. Each audit is reviewed with the physician responsible for the diagnostic process. Finally, logistic regression models are used to determine if there are differences in the diagnostic error variables based on the heuristics identified.
Discussion This work sets out a new approach to studying the diagnostic decision-making process in PC, taking advantage of new technologies which allow immediate recording of the decision-making process.
Sponsorship: The authors gratefully acknowledge funding of this research from the Spanish Research Agency. Ministry of Health (Fondo de Investigaciones Sanitarias) FIS PI10/01468 and the European Regional Development Fund (ERDF).
Publisher: Biomed Central
Keywords: Primary care
Diagnostic errors
URI: http://hdl.handle.net/10481/32228
ISSN: 1471-2296
Citation: Minué, S.; et al. Identification of factors associated with diagnostic error in primary care. BMC Family Practice, 15: 92 (2014). [http://hdl.handle.net/10481/32228]
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