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What is attack rate?
What is attack rate in epidemiology?
What is an example of an attack rate?
How is a relative attack rate calculated?
Incidence proportion is the proportion of an initially disease-free population that develops disease, becomes injured, or dies during a specified (usually limited) period of time. Synonyms include attack rate, risk, probability of getting disease, and cumulative incidence.
Attack rate, in epidemiology, the proportion of people who become ill with (or who die from) a disease in a population initially free of the disease. The term attack rate is sometimes used interchangeably with the term incidence proportion.
In epidemiology, the attack rate is the proportion of an at-risk population that contracts the disease during a specified time interval. It is used in hypothetical predictions and during actual outbreaks of disease.
Attack rate is a term used in epidemiology, usually in the setting of outbreaks, to define the risk of contracting a disease during a specified period (i.e. outbreak duration). Attack Rate (%) = No. of new cases of disease during time interval / Population at risk at start of time interval x 100
In simple terms, an attack rate is the number of new cases of a disease divided by the population at risk during a specified time period. This measure can help identify high-risk populations, track disease outbreaks and evaluate the success of intervention measures.
Attack Rate: a cumulative incidence for a disease during a specific period (e.g., an epidemic). Example: After a church picnic in Oswego, NY many attendees got food poisoning. There were 75 people at the picnic; 46 got sick within several hours, so the attack rate was 46/75 = 61%.
