NR 503 WEEK 8 FINAL QUIZ: POPULATION HEALTH,
EPIDEMIOLOGY AND STATISTICAL PRINCIPLES QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
Epidemiological Measures and Mortality
Study Designs and Causal Inference
Screening and Diagnostic Testing
Outbreak Investigation
Statistical Principles and Hypothesis Testing
Bias, Confounding, and Error
Infectious Disease Epidemiology
Chronic Disease and Risk Factors
Population Health and Determinants
Health Promotion and Prevention
Introduction
This comprehensive examination assesses the population health,
epidemiological, and statistical principles required of graduate
nursing students preparing for the NR 503 Week 8 Final Quiz. The
assessment evaluates proficiency in epidemiological measures,
study designs, screening validity, outbreak investigation, statistical
inference, bias and confounding, and social determinants of health.
Items are presented in multiple-choice and scenario-based formats
designed to simulate realistic public health decision-making.
Emphasis is placed on critical appraisal of research, interpretation
of data, and application of evidence to improve population
outcomes and reduce health disparities. The examination
challenges candidates to integrate epidemiological methods,
biostatistical reasoning, and clinical judgment to deliver safe and
effective population health nursing care.
Section One: Questions 1–100
,1. Which definition best describes epidemiology as applied in
graduate nursing and public health practice?
A. The study of individual patient diagnoses and treatment plans
in clinical settings
B. The study of the distribution and determinants of health-
related states or events in specified populations and the
application of this study to the control of health problems
C. The statistical analysis of hospital financial data to improve
revenue cycles
D. The laboratory investigation of pathogen morphology and
antimicrobial susceptibility
🟢 B. The study of the distribution and determinants of health-
related states or events in specified populations and the
application of this study to the control of health problems
🔴 RATIONALE: Epidemiology is fundamentally the study of
population-level patterns of health and disease, including
distribution (who, where, when) and determinants (causes, risk
factors), with the explicit goal of applying findings to control
health problems.
2. A community health nurse tracks new cases of Type 2 diabetes
in a county of 100,000 adults over one year. There were 400
new cases diagnosed. What is the incidence rate of Type 2
diabetes in this population?
A. 4 per 1,000 person-years
B. 400 per 100,000 person-years
C. 4 per 100 person-years
D. 0.4 per 1,000 person-years
🟢 A. 4 per 1,000 person-years
,🔴 RATIONALE: Incidence rate = new cases / population at risk /
time = , year = 0.004 per person-year = 4 per
1,000 person-years.
3. On March 1, 2026, a nurse epidemiologist surveys a town of
50,000 residents and identifies 750 people currently living with
asthma. What is the point prevalence of asthma on that date?
A. 1.5 per 1,000 population
B. 15 per 1,000 population
C. 150 per 1,000 population
D. 0.15 per 1,000 population
🟢 B. 15 per 1,000 population
🔴 RATIONALE: Point prevalence = all existing cases at a point in
time / total population = ,000 = 0.015 = 15 per 1,000
population.
4. During an outbreak of meningococcal disease on a college
campus, 45 students develop the illness and 3 die. What is the
case fatality rate?
A. 6.7%
B. 3.0%
C. 15.0%
D. 0.067%
🟢 A. 6.7%
🔴 RATIONALE: Case fatality rate (CFR) = deaths from disease /
total cases of disease × 100 = × 100 = 6.7%.
5. A 35-year-old dies in a motor vehicle accident. Using a
standard life expectancy of 75 years, how many years of
potential life lost (YPLL) are attributed to this death?
, A. 35 years
B. 40 years
C. 75 years
D. 110 years
🟢 B. 40 years
🔴 RATIONALE: YPLL = standard life expectancy − age at death =
75 − 35 = 40 years.
6. A public health nurse is comparing two summary measures of
population health burden. One measure combines years of life
lost due to premature death and years lived with disability. The
other measures health outcomes that account for both quality
and quantity of life. Which pair correctly identifies these
measures?
A. DALY and QALY
B. QALY and YPLL
C. YPLL and DALY
D. QALY and case fatality rate
🟢 A. DALY and QALY
🔴 RATIONALE: Disability-Adjusted Life Year (DALY) = Years of Life
Lost (YLL) + Years Lived with Disability (YLD). Quality-Adjusted Life
Year (QALY) measures health outcomes by combining life years
gained with quality-of-life weights.
7. A researcher identifies a group of 5,000 factory workers
exposed to a chemical solvent and follows them forward for 15
years to track lung cancer incidence, comparing them to 5,000
unexposed workers. Which study design is being used?
A. Retrospective case-control study
B. Prospective cohort study
EPIDEMIOLOGY AND STATISTICAL PRINCIPLES QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A | INSTANT DOWNLOAD PDF.
Core Domains
Epidemiological Measures and Mortality
Study Designs and Causal Inference
Screening and Diagnostic Testing
Outbreak Investigation
Statistical Principles and Hypothesis Testing
Bias, Confounding, and Error
Infectious Disease Epidemiology
Chronic Disease and Risk Factors
Population Health and Determinants
Health Promotion and Prevention
Introduction
This comprehensive examination assesses the population health,
epidemiological, and statistical principles required of graduate
nursing students preparing for the NR 503 Week 8 Final Quiz. The
assessment evaluates proficiency in epidemiological measures,
study designs, screening validity, outbreak investigation, statistical
inference, bias and confounding, and social determinants of health.
Items are presented in multiple-choice and scenario-based formats
designed to simulate realistic public health decision-making.
Emphasis is placed on critical appraisal of research, interpretation
of data, and application of evidence to improve population
outcomes and reduce health disparities. The examination
challenges candidates to integrate epidemiological methods,
biostatistical reasoning, and clinical judgment to deliver safe and
effective population health nursing care.
Section One: Questions 1–100
,1. Which definition best describes epidemiology as applied in
graduate nursing and public health practice?
A. The study of individual patient diagnoses and treatment plans
in clinical settings
B. The study of the distribution and determinants of health-
related states or events in specified populations and the
application of this study to the control of health problems
C. The statistical analysis of hospital financial data to improve
revenue cycles
D. The laboratory investigation of pathogen morphology and
antimicrobial susceptibility
🟢 B. The study of the distribution and determinants of health-
related states or events in specified populations and the
application of this study to the control of health problems
🔴 RATIONALE: Epidemiology is fundamentally the study of
population-level patterns of health and disease, including
distribution (who, where, when) and determinants (causes, risk
factors), with the explicit goal of applying findings to control
health problems.
2. A community health nurse tracks new cases of Type 2 diabetes
in a county of 100,000 adults over one year. There were 400
new cases diagnosed. What is the incidence rate of Type 2
diabetes in this population?
A. 4 per 1,000 person-years
B. 400 per 100,000 person-years
C. 4 per 100 person-years
D. 0.4 per 1,000 person-years
🟢 A. 4 per 1,000 person-years
,🔴 RATIONALE: Incidence rate = new cases / population at risk /
time = , year = 0.004 per person-year = 4 per
1,000 person-years.
3. On March 1, 2026, a nurse epidemiologist surveys a town of
50,000 residents and identifies 750 people currently living with
asthma. What is the point prevalence of asthma on that date?
A. 1.5 per 1,000 population
B. 15 per 1,000 population
C. 150 per 1,000 population
D. 0.15 per 1,000 population
🟢 B. 15 per 1,000 population
🔴 RATIONALE: Point prevalence = all existing cases at a point in
time / total population = ,000 = 0.015 = 15 per 1,000
population.
4. During an outbreak of meningococcal disease on a college
campus, 45 students develop the illness and 3 die. What is the
case fatality rate?
A. 6.7%
B. 3.0%
C. 15.0%
D. 0.067%
🟢 A. 6.7%
🔴 RATIONALE: Case fatality rate (CFR) = deaths from disease /
total cases of disease × 100 = × 100 = 6.7%.
5. A 35-year-old dies in a motor vehicle accident. Using a
standard life expectancy of 75 years, how many years of
potential life lost (YPLL) are attributed to this death?
, A. 35 years
B. 40 years
C. 75 years
D. 110 years
🟢 B. 40 years
🔴 RATIONALE: YPLL = standard life expectancy − age at death =
75 − 35 = 40 years.
6. A public health nurse is comparing two summary measures of
population health burden. One measure combines years of life
lost due to premature death and years lived with disability. The
other measures health outcomes that account for both quality
and quantity of life. Which pair correctly identifies these
measures?
A. DALY and QALY
B. QALY and YPLL
C. YPLL and DALY
D. QALY and case fatality rate
🟢 A. DALY and QALY
🔴 RATIONALE: Disability-Adjusted Life Year (DALY) = Years of Life
Lost (YLL) + Years Lived with Disability (YLD). Quality-Adjusted Life
Year (QALY) measures health outcomes by combining life years
gained with quality-of-life weights.
7. A researcher identifies a group of 5,000 factory workers
exposed to a chemical solvent and follows them forward for 15
years to track lung cancer incidence, comparing them to 5,000
unexposed workers. Which study design is being used?
A. Retrospective case-control study
B. Prospective cohort study
