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Medicina & Laboratorio

2017, Number 07-08

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Medicina & Laboratorio 2017; 23 (07-08)

Importance of calculation of sensitivity, specificity, and other statistical parameters in the use of clinical and laboratory diagnostic tests

Vizcaíno-Salazar GJ

Language: Spanish
References: 54
Page: 365-386
PDF size: 772.40 Kb.


ABSTRACT

The selection of a test to request a patient as well as their interpretation is a daily scenario in which the physician must deal and apply his critical judgment based on the reported evidences. It is common that when talking about a clinical or laboratory diagnostic test, parameters such as sensitivity, specificity and positive and negative predictive values are described. These parameters reflect the characteristics of a diagnostic test and serve to decide when should be used (sensitivity and specificity of a test) or what is the meaning of a test result in a particular patient. When it is necessary to compare these parameters in different tests and opting for the most useful for the diagnosis of a particular disease, it is essential that the physician knows and learns how these measures are obtained and their interpretation to decide the most appropriate behavior for the patient. The objective of the present review is to provide basic and simple statistical concepts for the understanding and application of clinical and laboratory diagnostic tests.


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