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• W2971388990 abstract "Research designs refer to the way information is obtained and are limited by ethical, economic and temporal viability. Research designs are standardized strategies to reduce biases, which in the architectural model of research are identified in the baseline state, the maneuver and the outcome; hence, there are no specific designs for each question. The design with the lowest probability of bias is the clinical trial, followed by cohort and case-control studies and, finally, by cross-sectional surveys. Among the main characteristics that give merit to research designs are the following: population inquiry, which refers to the situation of the population in relation to the clinical course/natural history of the disease; the maneuver, or action that is expected to modify the baseline state, which can be observational or experimental; follow-up, or documented monitoring that is given to each subject, which can be longitudinal or cross-sectional; and directionality, which can prolective or retrolective and refers to the timing of data collection for research purposes. It will always be better having a valuable question, even when answered with a design with higher risk of bias, than a question that is irrelevant or has no applicability.Los diseños de investigación se refieren a la forma como se obtiene la información y están limitados por viabilidad ética, económica y temporal. Son estrategias estandarizadas para disminuir los sesgos que en el modelo arquitectónico de la investigación se identifican en el estado basal, maniobra y desenlace; de ahí que no hay diseños específicos para cada pregunta. El diseño con menor probabilidad de sesgos es el ensayo clínico, seguido de la cohorte, el estudio de casos y controles y, finalmente, la encuesta transversal. Entre las principales características que dan mérito a los diseños están las siguientes: la pesquisa de la población, que se refiere a la ubicación de la población en relación con el curso clínico o historia natural de la enfermedad; la maniobra, o acción que se espera modifique la condición basal, que puede ser observacional o experimental; el seguimiento, o monitoreo documentado que se le da a cada sujeto, que puede ser longitudinal o transversal; y la direccionalidad, prolectiva o retrolectiva, que alude al tiempo de recopilación de la información con fines de investigación. Siempre será mejor tener una pregunta valiosa, incluso cuando se responda con un diseño con mayor riesgo de sesgos, que una pregunta irrelevante o sin aplicabilidad." @default.
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• W2971388990 date "2019-05-28" @default.
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• W2971388990 title "De vuelta a la clínica. Métodos I. Diseños de investigación. Mayor calidad de información, mayor certeza a la respuesta" @default.
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