This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'At the end of the year 1990, the population of primary health centre was 30,000 and there were 120 cases of pulmonary tuberculosis. At the end of the year 1991, the population was 30,600 and 30 new cases were detected and 2 cases had died. Based on this data all of the following rates can be calculated except \nSelect and explain. \nA. incidence, B. Prevalence, C. Case fatality, D. Propoional moality', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref: Parks 23rd edition pg 58 Propoional moality rate from a specific disease = no. of deaths from the specific disease in a yr / total deaths from all causes in that yr x100. Here the denominator is unavailable. So can&;t be calculated.', 'role': 'assistant'}]