"Incidence" is defind as-: (A) Number of new cases occurring in a defined population, (B) Total cases (new + old) occurring in a defined population, (C) Number of exposed developing the disease in a defined population, (D) None of the above
Answer is D. Incidence is defined as the number of new cases occurring in a defined population during a specified period of time. It can also refer to a new spell or episodes of disease arising in a given period of time per 1000 population. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 68