The following is true about prevalence and incidence:
Correct Answer: Incidence is a rate but prevalence is not
Description: Incidence rate is defined as 'the number of NEW cases occurring in a defined population during a specific period of time.' Disease prevalence refers specifically to all current cases(old and new) existing at a given point in time or over a period of time in a given population. Although referred to as a rate, prevalence rate is really a ratio. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 68, 69
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Social & Preventive Medicine
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