P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Intro to Epidemiology
Exam 1 Questions &
Answers 2026/2027
Comprehensive Updated
Edition (Rationales)
Verified Answers Exam Ready With Rationales 80 QUESTIONS
DOCUMENT OVERVIEW
This comprehensive document provides 80 updated exam questions with pre-filled correct
answers and detailed rationales, covering fundamental epidemiology. It is perfectly suited
for students preparing for certification exams, reviewing course material, or solidifying
their understanding of core epidemiological concepts.
TOPICS
Foundations of Epidemiology Q1–Q14
Health Trends & Risk Factors Q15–Q31
Epidemiological Concepts & Measures Q32–Q54
Epidemic Dynamics & Surveillance Q55–Q68
Historical Figures & Studies Q69–Q74
Study Designs & Methods Q75–Q80
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 80
What is epidemiology?
ANSWER
-the branch of medicine that deals with the incidence, distribution, and possible control of
diseases and other factors relating to health.
-The study of the distribution and determinants of health-related phenomena in human
populations and the application of this study to control health problems.
-the study of what befalls the population.
Q2 QUESTION 2 OF 80
What are the determinants of epidemiology?
ANSWER
-factors/events brought about change in health phenomena
-environment
-infectious agents
-medical care
-genetics
-social factors
-lifestyle choices
RATIONALE
Epidemiology studies the factors influencing health and disease distribution in populations. These
determinants encompass a broad spectrum, including environmental exposures, biological agents,
healthcare access, genetic predispositions, societal influences, and individual behaviors.
Understanding these elements is crucial for identifying causes and developing effective public
health interventions.
Q3 QUESTION 3 OF 80
What are the distributions of epidemiology?
Page 2
, ANSWER
-person: age, sex, race
-place: urban, US, near power plant
-time: June, annual, decade
RATIONALE
Epidemiological distributions analyze disease patterns by considering "who" (person), "where"
(place), and "when" (time). These categories allow for the systematic characterization of disease
occurrence in populations. Understanding these distributions is fundamental to identifying risk
factors and guiding public health interventions.
Q4 QUESTION 4 OF 80
What are the health-related phenomena of epidemiology?
ANSWER
-types of health outcomes
-infectious diseases
-chronic diseases
-disability, injury, limitation of activity
-active life expectancy
-mental illness, suicide, drug addiction
-morbidity & mortality
RATIONALE
Epidemiology broadly studies the distribution and determinants of health-related states and
events in specified populations. This encompasses a wide spectrum of conditions including
infectious and chronic diseases, as well as non-disease outcomes such as disability, injury, and
mental health issues. Ultimately, it aims to understand patterns of morbidity and mortality to
inform public health interventions.
Q5 QUESTION 5 OF 80
What is morbidity?
ANSWER
-designates illness that occur in a population/ other group
Page 3
, RATIONALE
Morbidity refers to the state of being diseased or unhealthy within a defined population or group. It
quantifies the prevalence or incidence of illness, distinguishing it from mortality, which measures
death. This epidemiological concept is fundamental to understanding disease burden and health
status.
Q6 QUESTION 6 OF 80
What is mortality?
ANSWER
-refers to deaths that occur in a population/ other group
RATIONALE
Mortality is a fundamental epidemiological concept quantifying the occurrence of death. It
specifically relates to the rate or number of deaths within a defined population or group over a
specified period, serving as a key indicator of population health status.
Q7 QUESTION 7 OF 80
What is population of epidemiology?
ANSWER
-examines disease occurrence among population groups NOT individuals
-referred to as population medicine
RATIONALE
Epidemiology's core function is to investigate disease patterns and determinants within defined
groups, not isolated persons. This population-level focus distinguishes it as a discipline often
termed population medicine, enabling the identification of public health trends and interventions.
Q8 QUESTION 8 OF 80
What are the aims & levels of epidemiology?
Page 4
Intro to Epidemiology
Exam 1 Questions &
Answers 2026/2027
Comprehensive Updated
Edition (Rationales)
Verified Answers Exam Ready With Rationales 80 QUESTIONS
DOCUMENT OVERVIEW
This comprehensive document provides 80 updated exam questions with pre-filled correct
answers and detailed rationales, covering fundamental epidemiology. It is perfectly suited
for students preparing for certification exams, reviewing course material, or solidifying
their understanding of core epidemiological concepts.
TOPICS
Foundations of Epidemiology Q1–Q14
Health Trends & Risk Factors Q15–Q31
Epidemiological Concepts & Measures Q32–Q54
Epidemic Dynamics & Surveillance Q55–Q68
Historical Figures & Studies Q69–Q74
Study Designs & Methods Q75–Q80
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 80
What is epidemiology?
ANSWER
-the branch of medicine that deals with the incidence, distribution, and possible control of
diseases and other factors relating to health.
-The study of the distribution and determinants of health-related phenomena in human
populations and the application of this study to control health problems.
-the study of what befalls the population.
Q2 QUESTION 2 OF 80
What are the determinants of epidemiology?
ANSWER
-factors/events brought about change in health phenomena
-environment
-infectious agents
-medical care
-genetics
-social factors
-lifestyle choices
RATIONALE
Epidemiology studies the factors influencing health and disease distribution in populations. These
determinants encompass a broad spectrum, including environmental exposures, biological agents,
healthcare access, genetic predispositions, societal influences, and individual behaviors.
Understanding these elements is crucial for identifying causes and developing effective public
health interventions.
Q3 QUESTION 3 OF 80
What are the distributions of epidemiology?
Page 2
, ANSWER
-person: age, sex, race
-place: urban, US, near power plant
-time: June, annual, decade
RATIONALE
Epidemiological distributions analyze disease patterns by considering "who" (person), "where"
(place), and "when" (time). These categories allow for the systematic characterization of disease
occurrence in populations. Understanding these distributions is fundamental to identifying risk
factors and guiding public health interventions.
Q4 QUESTION 4 OF 80
What are the health-related phenomena of epidemiology?
ANSWER
-types of health outcomes
-infectious diseases
-chronic diseases
-disability, injury, limitation of activity
-active life expectancy
-mental illness, suicide, drug addiction
-morbidity & mortality
RATIONALE
Epidemiology broadly studies the distribution and determinants of health-related states and
events in specified populations. This encompasses a wide spectrum of conditions including
infectious and chronic diseases, as well as non-disease outcomes such as disability, injury, and
mental health issues. Ultimately, it aims to understand patterns of morbidity and mortality to
inform public health interventions.
Q5 QUESTION 5 OF 80
What is morbidity?
ANSWER
-designates illness that occur in a population/ other group
Page 3
, RATIONALE
Morbidity refers to the state of being diseased or unhealthy within a defined population or group. It
quantifies the prevalence or incidence of illness, distinguishing it from mortality, which measures
death. This epidemiological concept is fundamental to understanding disease burden and health
status.
Q6 QUESTION 6 OF 80
What is mortality?
ANSWER
-refers to deaths that occur in a population/ other group
RATIONALE
Mortality is a fundamental epidemiological concept quantifying the occurrence of death. It
specifically relates to the rate or number of deaths within a defined population or group over a
specified period, serving as a key indicator of population health status.
Q7 QUESTION 7 OF 80
What is population of epidemiology?
ANSWER
-examines disease occurrence among population groups NOT individuals
-referred to as population medicine
RATIONALE
Epidemiology's core function is to investigate disease patterns and determinants within defined
groups, not isolated persons. This population-level focus distinguishes it as a discipline often
termed population medicine, enabling the identification of public health trends and interventions.
Q8 QUESTION 8 OF 80
What are the aims & levels of epidemiology?
Page 4
