This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening for Disease, Subject name: Social & Preventive Medicine
[{'content': 'Period between the possible time of detection and the possible time of diagnosis is \nSelect and explain. \nA. Lead time, B. Screening time, C. Generation time, D. Serial interval', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. a (Lead time) (Ref. Park's textbook of PSM 22nd/p 95)Lead Time# It is advantge gained by screening, i.e., period between diagnosis by early detection and diagnosis by other means.# It is period between the possible time of detection and possible time of diagnosis.Latent Period# Time between exposure to a risk factor and subsequent development of clinical manifestations of a particular disease.Sreening Time# Interval between first clinical detection and final critical point.Seriai Interval# Time gap between onset of primary and secondary case. It is the measure of incubation period.", 'role': 'assistant'}]