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Step 2 Biostats
Terms in this set (9)
When the treatment selected for a patient depends on the severity of the patient's condition, a form of ___________ known as susceptibility bias can occur. ie PCI vs medical management, when PCI was used in pts with worse presentation/prognosis.
Involves 2 or more experimental interventions, each with 2 or more variables that are studied independently.
Measure of a tests ability to give very close measurements on repeat testing
Attributable risk percent
(Risk in exposed - Risk in unexposed) / (R in exposed)
Number needed to treat
What is the definition of positive predictive value?
Proportion of people with positive test result that actually have the disease. (True positives) divided by (True positives + false positives) which equals A/(A+B)
Used as a measure of association in cohort studies
False positive ratio
Fale negative ratio
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