NR 503 WEEK 8 FINAL QUIZ POPULATION HEALTH
EPIDEMIOLOGY AND STATISTICAL PRINCIPLES PRACTICE
EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES | INSTANT DOWNLOAD PDF
Core Domains
Epidemiological Foundations & Study Designs
Measures of Disease Frequency
Measures of Association & Impact
Screening & Diagnostic Testing
Outbreak Investigation & Surveillance
Population Health & Health Disparities
Biostatistics & Data Interpretation
Evidence-Based Practice & Clinical Decision-Making
Infectious Disease Epidemiology
Chronic Disease Epidemiology & Prevention
Introduction
,This comprehensive examination assesses the population
health, epidemiology, and statistical principles knowledge
required of the advanced practice nurse. It evaluates study
design, measures of disease frequency and association,
screening validity, outbreak investigation, and evidence-based
practice. The examination employs multiple-choice and
scenario-based questions aligned with the NR 503 course
objectives. Emphasis is placed on critical thinking, data
interpretation, and the application of epidemiologic principles
to clinical and population health decision-making. This
assessment prepares candidates for the rigor of the NR 503
Week 8 Final Quiz and real-world advanced nursing practice.
SECTION ONE: QUESTIONS 1–100
1. A public health nurse wants to determine the current
prevalence of undiagnosed type 2 diabetes in a
community. She randomly selects 2,000 adults, measures
fasting blood glucose, and calculates the proportion with
elevated values. Which study design is being used?
A. Cohort study
B. Case-control study
C. Cross-sectional study
D. Ecologic study
,🟢 C. Cross-sectional study
🔴 RATIONALE: A cross-sectional study measures both
exposure and outcome simultaneously at a single point in
time (or over a brief period), providing a "snapshot" of
disease prevalence in a population. This design is ideal for
estimating prevalence and generating hypotheses but
cannot establish temporality or incidence. Students often
confuse cross-sectional studies with cohort studies; the key
distinction is that cross-sectional studies lack a time
dimension for following participants forward.
2. A researcher identifies 150 patients newly diagnosed
with ovarian cancer and 300 matched controls without
cancer. She interviews all participants about their lifetime
talcum powder use. What type of study design is this?
A. Prospective cohort study
B. Retrospective cohort study
C. Case-control study
D. Randomized controlled trial
🟢 C. Case-control study
🔴 RATIONALE: This is a classic case-control study:
participants are selected based on disease status (cases with
, ovarian cancer, controls without), and past exposure (talcum
powder use) is assessed retrospectively. Case-control studies
are efficient for rare diseases and diseases with long latency
periods but are susceptible to recall bias.
3. A researcher enrolls 5,000 nurses who smoke and 5,000
nurses who do not smoke. She follows both groups for 20
years, recording lung cancer incidence. What type of study
design is this, and what measure of association can be
directly calculated?
A. Case-control study; odds ratio
B. Cross-sectional study; prevalence ratio
C. Cohort study; risk ratio (relative risk)
D. Ecologic study; correlation coefficient
🟢 C. Cohort study; risk ratio (relative risk)
🔴 RATIONALE: This is a prospective cohort study:
participants are classified by exposure status (smoking) at
baseline and followed forward in time to measure disease
incidence (lung cancer). Cohort studies allow direct
calculation of incidence rates and risk ratios (relative risk, RR
= incidence in exposed / incidence in unexposed).
EPIDEMIOLOGY AND STATISTICAL PRINCIPLES PRACTICE
EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES | INSTANT DOWNLOAD PDF
Core Domains
Epidemiological Foundations & Study Designs
Measures of Disease Frequency
Measures of Association & Impact
Screening & Diagnostic Testing
Outbreak Investigation & Surveillance
Population Health & Health Disparities
Biostatistics & Data Interpretation
Evidence-Based Practice & Clinical Decision-Making
Infectious Disease Epidemiology
Chronic Disease Epidemiology & Prevention
Introduction
,This comprehensive examination assesses the population
health, epidemiology, and statistical principles knowledge
required of the advanced practice nurse. It evaluates study
design, measures of disease frequency and association,
screening validity, outbreak investigation, and evidence-based
practice. The examination employs multiple-choice and
scenario-based questions aligned with the NR 503 course
objectives. Emphasis is placed on critical thinking, data
interpretation, and the application of epidemiologic principles
to clinical and population health decision-making. This
assessment prepares candidates for the rigor of the NR 503
Week 8 Final Quiz and real-world advanced nursing practice.
SECTION ONE: QUESTIONS 1–100
1. A public health nurse wants to determine the current
prevalence of undiagnosed type 2 diabetes in a
community. She randomly selects 2,000 adults, measures
fasting blood glucose, and calculates the proportion with
elevated values. Which study design is being used?
A. Cohort study
B. Case-control study
C. Cross-sectional study
D. Ecologic study
,🟢 C. Cross-sectional study
🔴 RATIONALE: A cross-sectional study measures both
exposure and outcome simultaneously at a single point in
time (or over a brief period), providing a "snapshot" of
disease prevalence in a population. This design is ideal for
estimating prevalence and generating hypotheses but
cannot establish temporality or incidence. Students often
confuse cross-sectional studies with cohort studies; the key
distinction is that cross-sectional studies lack a time
dimension for following participants forward.
2. A researcher identifies 150 patients newly diagnosed
with ovarian cancer and 300 matched controls without
cancer. She interviews all participants about their lifetime
talcum powder use. What type of study design is this?
A. Prospective cohort study
B. Retrospective cohort study
C. Case-control study
D. Randomized controlled trial
🟢 C. Case-control study
🔴 RATIONALE: This is a classic case-control study:
participants are selected based on disease status (cases with
, ovarian cancer, controls without), and past exposure (talcum
powder use) is assessed retrospectively. Case-control studies
are efficient for rare diseases and diseases with long latency
periods but are susceptible to recall bias.
3. A researcher enrolls 5,000 nurses who smoke and 5,000
nurses who do not smoke. She follows both groups for 20
years, recording lung cancer incidence. What type of study
design is this, and what measure of association can be
directly calculated?
A. Case-control study; odds ratio
B. Cross-sectional study; prevalence ratio
C. Cohort study; risk ratio (relative risk)
D. Ecologic study; correlation coefficient
🟢 C. Cohort study; risk ratio (relative risk)
🔴 RATIONALE: This is a prospective cohort study:
participants are classified by exposure status (smoking) at
baseline and followed forward in time to measure disease
incidence (lung cancer). Cohort studies allow direct
calculation of incidence rates and risk ratios (relative risk, RR
= incidence in exposed / incidence in unexposed).
