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Midterm Exam: NR503/ NR 503 (New 2026/2027 Update) Population Health, Epidemiology & Statistical Principles Exam Review | Questions and Verified Answers| 100% Correct| Grade A- Chamberlain
Midterm Exam: NR503/ NR 503 (New 2026/
2026 Update) Population Health,
Epidemiology & Statistical Principles Exam
Review | Questions and Verified Answers|
100% Correct| Grade A- Chamberlain
Q: For disease to occur the agent, host, and enviro must:
Answer:
interact, but not every exposure results in illness
Q: Agent
Answer:
Something that is causing disease
EX: bacteria, virus, parasite, etc
Q: Host
Answer:
Thing being infected by the agent
-Age, educ, occ, behavior
Q: Physical Host factors
Answer:
-Make humans more susceptible
-Age, gender, race, immune status, genetics
Q: Lifestyle host factors
Answer:
Diet, exercise, sleep patterns, healthy/unhealthy habits
Q: Agent factors
Answer:
Biologic, chemical, physical, psychological, nutrients,
Q: Environment of epidemiologic triangle...
Answer:
provides the conditions that make the connection between host and agent likely or unlikely
-Includes physical, biological, and social environment
Q: How does environment increase risks?
Answer:
Air, water, soil, noise, and surface pollution
-These all make us more susceptible to disease
Q: Web of Causation
Answer:
an interrelationship of multiple factors that contribute to the occurrence of a disease
Q: Steps of the Epidemiological Method
Answer:
-Define the problem
-Determine the natural history of the disease
-Stages of the disease
-Extent of the problem
-Plan or control strategy
-Implementation of control strategy
-Evaluation of control
-Perform research
Q: Define the Problem
Answer:
-Look at the extent of the problem
EX: look at incidence and prevalence
Q: Incidence
Answer:
a measure of the probability of occurrence of a given medical condition in a population within a
specified period of time
Q: Prevalence
Answer:
the proportion of a particular population found to be affected by a medical condition
Q: Determine Natural History of the Disease
Answer:
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