Perception has been defined as the personal view that an individual has of him/herself and of reality. The practice of EBM requires, according to its founders, the application of the following methodology: 1) identify a question of clinical interest, the reply to which can benefit a particular patient 2) seek information to locate and obtain, as efficiently as possible, the best scientific evidence with which to respond to the question 3) critically evaluate the validity of said evidence (proximity to the truth), impact (strength of the effect) and applicability (usefulness in clinical practice) 4) integrate the critical evaluation with the biological data of the patient, his/her values and particular circumstances 5) evaluate the fulfillment of the previous steps and find ways to improve the process next time. Sackett stipulates that EBM is the integration of three important aspects: the best available evidence, clinical experience and patient’s values.
In 1996 David Sackett described it as the conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients. Its inclusion in medical practice is part of a universal cultural movement made up of an extension of scientific tradition into different areas of human activity. The concept of Evidence Based Medicine (EBM) was introduced in 1992 by Gordon Guyatt at McMaster University. A major discrepancy was found between self-perception and the level of basic knowledge of EBM among the surveyed physicians. In spite of this, the majority of them did not know the characteristics that define the EBM and phases of the process for its practice.
The majority of the surveyed physicians have a high self-perception of the relevance of EBM. Phases of the EBM process: The majority of those surveyed ( n = 218, 68 %) did not include the steps that characterize the practice of EBM, of which 79 participants (25 %) mentioned elements not related to it. Knowledge of EBM: Definition of EBM Seven of those surveyed (2 %) included 3 of the 4 characteristics of the definition, 82 (26 %) mentioned only two characteristics of the definition, 152 (48 %) mentioned only one characteristic and 79 (25 %) did not include any characteristic of EBM. The global index of self-perception was 75 %. The great majority ( n = 270, 84 %) believe that EBM is very important in clinical practice and 197 physicians (61 %) said that they implement it always or usually. Self-perception of EBM: The majority of those surveyed ( n = 274, 86 %) declared that they were very or moderately familiar with EBM. ResultsĪ total of 320 questionnaires were given to 55 medical students (17 %) 45 pre-graduate medical interns (14 %) 118 medical residents (37 %) and 102 appointed physicians of different specialties (32 %). Self-perception was measured by means of a structured scale, and the degree of knowledge through parameter or “rubrics” methodology. MethodsĪ survey was carried out in a third level public hospital in Mexico City. Our goal was to identify the relationship between self-perception about the relevance of Evidence Based Medicine (EBM) and the degree of basic knowledge of this discipline in a group of physicians. The influence, legitimacy and application of Evidence Based Medicine (EBM) in the world is growing as a tool that integrates, the best available evidence to decision making in patient care.
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