This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening, Subject name: Social & Preventive Medicine
[{'content': 'Diagnostic power of the test is reflected by \nSelect and explain. \nA. Sensitivity, B. Specificity, C. Predictive value, D. Population Attributable risk', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The performance of a screening test is measured by its predictive value which reflects the diagnostic power of the test.The predictive accuracy depends upon sensitivity, specificity and disease prevalence. Park 23e pg: 140', 'role': 'assistant'}]