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5 Cards in this Set
- Front
- Back
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Incidence Rate (RATE)
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# of new cases of disease in a time period X 10n/Total # of persons at risk in the time period (measured in person-time)
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Cumulative incidence
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proportion
– It does not contain time in the denominator • Numerator = number of cases • Denominator = number of persons at the start of the time period |
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Attack Rate (PERCENT or PER PERSON)
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Numerator:
# new cases of a specified disease reported during an epidemic period Denominator: population at start of tile epidemic period (persons) Attack rate = # who got sick/ # exposed X 100 |
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Secondary Attack Rate (PERCENT or PER PERSON)
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Numerator: # new cases of a specified disease among contacts of known cases
Denominator: size of contact population at risk(persons) |
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Point Prevalence (PERCENT or PER PERSON)
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Numerator: # current cases, new and old, of a specified disease at a given point in time
Denominator: estimated population at mid-interval (person-time) |
