Criterion validity of measurement instruments used in biomedical research

Abstract

Objective: To describe the process of criterion validation of a diagnostic test or a measurement scale. Methods: I review a compendium of books and explored some databases to conduct a summary of the information. Results: For the process of criterion validation of a diagnostic test or a measurement scale, we always take four steps: select an appropriate gold standard, determine the sample size, set the sensitivity, specificity and predictive values. Finally, determine the agreement between two diagnostic tests or scales. Conclusions: The criterion validation of a diagnostic test or a measurement scale is a systematic process that requires proper development. In this way, the results of measurement instruments have a diagnostic capability

Keywords

• Estudios de validación, Diagnóstico, Valor predictivo de las pruebas