D401 HLTH 3310 Introduction to Epidemiology FA READINESS EXAM Q & S 2025/2026

1. Multiple Choice: What is the primary purpose of a casecontrol study in epidemiology?
 A) To determine the prevalence of a disease
 B) To evaluate the effectiveness of a treatment
 C) To identify factors that may contribute to a disease's
development
 D) To establish the incidence rate of a disease
 Correct Answer: C) To identify factors that may contribute
to a disease's development.
 Rationale: Case-control studies are observational and
retrospective, focusing on comparing subjects with a
disease (cases) to those without (controls) to identify
potential causes or risk factors.
2. Fill-in-the-Blank: The measure of disease frequency over
a specified period among individuals who are at risk of
developing the disease is known as ____________.
 Correct Answer: Incidence
 Rationale: Incidence refers to the number of new cases of
a disease that occur in a specified population within a
certain time frame.
3. True/False: The cohort study design is the best option for
investigating rare diseases.
 Correct Answer: False
 Rationale: Cohort studies are not typically used for rare
diseases due to the large number of participants needed to
observe a sufficient number of cases.
4. Multiple Response: Which of the following are common
biases found in epidemiological studies? (Select all that