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Midterm Exam: NR 503 / NR503
( Update 2025 / 2026) Population Health, Epidemiology & Statistical Principles Review Questions and Answers – Chamberlain
Question:
epidemiological study designs
Answer:
observational and experimental
Question:
name 3 observational study designs
Answer:
cohort study case control study cross sectional study
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Question:
name an experimental study design
Answer:
randomized controlled trial
Question:
name in order the study designs based on evidence strength
Answer:
- systematic review/meta-analysis
- randomized controlled trial
- cohort study
- case control study
- cross sectional study
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Question:
what is a cohort study
Answer:
*concerned with frequency of disease in exposed and non-exposed individuals
involves a group of individuals who meet a set of inclusion criteria at the start of a study
this group is followed, and associations are made between a risk factor and disease
Question:
two type of cohort studies
Answer:
prospective: follows individuals who have the risk factor to see if over time
they develop the disease
retrospective: exposure or risk factor is obtained looking back in time, data is gathered from medical records
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