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NR 503 (Epidemiology)-Week 3 Exam Questions and Complete Solutions Graded A+
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NR 503 (Epidemiology)-Week 3 Exam Questions and Complete Solutions Graded A+
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NR 503 (Epidemiology)-Week 3 ExamQuestions and Complete Solutions
Graded A+
Risk Factor - Answer: A condition that may adversely affect an individual's health
Absolute Risk - Answer: The incidence of disease in a population
Relative risk - Answer: The ratio of the risk of disease in exposed individuals to the risk of disease in non-
exposed individuals
Odds Ratio - Answer: The ratio of the odds of development of disease in non-exposed person
Attributable Risk - Answer: How much of the risk (incidence) of the disease we hope to prevent if able to
eliminate exposure to the agent in question
Incidence Rate - Answer: The number of new cases of a disease that occurs during a specified period of
time in a population at risk for developing the disease
Prevalence Rate - Answer: The number of affected persons present in the population at a specific time
divided by the number of persons in the population at that same time
The 5W's of descriptive epidemiology - Answer: What = health issue of concern
Who = person
Where = place
When = time
Why/how = causes, risk factors, modes of transmission
Necessary and Sufficient Causal relationship - Answer: A factor in both necessary (disease will occur only
if the factor is present) AND sufficient (exposure always leads to disease). Rarely encountered. Example:
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