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10 Cards in this Set
- Front
- Back
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Endemic |
Habitually present in human populations |
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Attack rate formula? |
# Sick / # Exposed |
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In an infectious disease outbreak, why is plotting the epidemic curve useful? |
1. Helps determine the source (single source, person-to-person, etc) 2. Helps determine the median incubation period
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Characteristic of a single source common vehicle outbreak (the one highlighted in Gordis questions) |
Explosive |
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1000 Same age men and women get an exam and 5/1000 men have migraines while 10/1000 women do.
Why can't you say women have twice the risk of migraine? |
This is prevalence, risk is a characteristic of incidence. |
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Calculate incidence given an incidence rate. |
Annual incidence rate x population in a given year.
i.e. 5/100,000 x 2 million = 100 new cases that yr |
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Does active surveillance reduce reporting burden on healthcare providers? |
YES! This is when PH officials go out to clinics/hospitals to perform "case finding" |
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If you are calculating age specific incidence and you exclude people who cannot get the disease (perhaps they don't have the target organ)--what happens to your incidence rate? |
Increases (smaller denominator) |
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20's have 20% HTN 30's have 25% HTN
Can we say there is an age-related HTN risk? |
No, this is again confusing prevalence and incidence
Incidence is related to risk |
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incidence rate formula? |
# new cases during time period / Population at median time point |
