Evaluation of a diagnostic test study-MD/DNB exam preparation

Topic:Statistics
Questions: Direct question from december 2019 dnb exam
This discussion is only to help medical students and healthcare professionals to understand the basic concepts and enable them to approach a case/write in theory exams.I would like to reiterate that the information provided is a compendium of data obtained from various sources and the rights lie with the respective authors

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Thank you mam