This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Definition & Concepts, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following is not true about Crude Bih Rate? \nSelect and explain. \nA. It is a measure of feility, B. It is actually a ratio, C. It is independent of the age structure of the population, D. Numerator does not include still bihs', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Crude bih rate - Measure of feility Measures the incidence of live bihs in the total population in a given period of time (one year). The numerator is a sub-set of the denominator;so it is a Rate. It is independent of the age structure of the population.', 'role': 'assistant'}]