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What is Number of new cases occurring in a defined population during a specified period of time is known as: March 2013 and explain in detail?
Ans. B i.e. Incidence Incidence is a measure of the risk of developing some new condition within a specified period of time. Although sometimes loosely expressed simply as the number of new cases during some time period, it is better expressed as a propoion or a rate with a denominator.