system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Prevalence is a
assistant
The correct answer is  Ref: Parks 23rd edition pg 61 Prevalence is a propoion. Time is not mentioned. Point prevalence of a disease is defined as the number of all current cases (old and new) of a disease at one point of time, in relation to a defined population.