Understanding diagnostic tests. Part 2.

Understanding diagnostic tests. Part 2.

1. Methods in Epidemiologic, Clinical, and Operations Research–MECOR–program, American Thoracic Society/Asociación Latinoamericana del Tórax, Montevideo, Uruguay. 2. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles (CA) USA. 3. Divisão de Pneumologia, Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina, Universidade de São...

Understanding diagnostic tests. Part 1.

1. Methods in Epidemiologic, Clinical, and Operations Research–MECOR–program, American Thoracic Society/Asociación Latinoamericana del Tórax, Montevideo, Uruguay. 2. Divisão de Pneumologia, Instituto do Coração, Hospital das Clínicas Faculdade de Medicina, Universidade de São Paulo, São Paulo (SP) Brasil. 3. Department of Preventive Medicine, Keck School of Medicine, University of Southern Cali...

part 2: positive and negative predictive values of diagnostic tests

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1 C 2 Diagnostic Tests

part 3: positive and negative likelihood ratios of diagnostic tests

in the previous two parts of educational manuscript series in emergency, we explained some screening characteristics of diagnostic tests including accuracy, sensitivity, specificity, and positive and negative predictive values. in the 3rd  part we aimed to explain positive and negative likelihood ratio (lr) as one of the most reliable performance measures of a diagnostic test. to better underst...