Calculate the prevalence if incidence is 2 cases per 1,000 population per year and mean duration is 4 years-: (A) 8 mases per 1,000 population, (B) 2 cases per 1,000 population, (C) 0.5 cases per 1,000 population, (D) 32 cases per 1,000 population
Answer is A. prevalence is calculated as the product of incidence and mean duration of a disease in a community.during a specific period,here it is given as 4 *2 cases per 1000 population. ref:park&;s textbook,ed 22,pg no 67