Midterm Exam: NR503/ NR 503 (New 2026/2027 Update) Population Health, Epidemiology & Statistical Principles Exam Review | Complete Guide with Questions and Verified Answers| 100% Correct| Grade A- Chamberlain

Midterm Exam: NR503/ NR 503 (New 2026/2027 Update) Population Health, Epidemiology & Statistical Principles Exam Review | Complete Guide with Questions and Verified Answers| 100% Correct| Grade A- Chamberlain

Midterm Exam: NR503/ NR 503 (New 2026/

2026 Update) Population Health,

Epidemiology & Statistical Principles Exam

Review | Complete Guide with Questions and

Verified Answers| 100% Correct| Grade AChamberlain

Q: Cohort designs Strengths

Answer:

â– Able to identify confounding and address in the study

â– Able to control exposure

â– Able to calculate relative risk and incidence rates

â– Can study multiple outcomes

Q: Cohort designs Weaknesses

Answer:

â– Labor intensive

â– Costly

â– Lengthy

Q: Environmental conditions example

Answer:

influenza, which is most prevalent during certain times of the year. Infectious disease

departments document these seasonal trends during the year, and they are available for

healthcare providers to review

Q: Completes the following sentence: An APRN needs to be aware of both publication

________ and citation ________ (additional types of information ________), particularly when

carrying out systematic reviews or meta-analyses

Answer:

BIAS

Q: The method for _______ data can help reduce problems related to confounding.

Answer:

analyzing

Q: completes the following sentence: In a double-blind study, both the subjects and the

________ are blinded, that is, unaware of which group is receiving the experimental treatment or

intervention.

Answer:

Investigators

Q: general guidelines that APRNs can follow when conducting a study to provide a framework

for a quality design

Answer:

.â– Complete an extensive review of the literature to determine what is currently known about the

problem and to provide a sound theoretical background

.â– Select a study design that will best answer the research question.

â– Choose a study design that is feasible in terms of both time and money.

â– Once a design is chosen, plan every step of the research process before beginning the study

(e.g., determination of inclusion and exclusion criteria, selection of primary and secondary

outcomes of interest).

â– Ensure that comparison groups are as similar as possible; stratify for possible confounders early

on to avoid making false conclusions

.â– Determine sufficient sample size to ensure the study has adequate power for result

interpretation

.â– Use objective criteria for the collection of all data

.â– Train all investigators to ensure that data are collected uni

Q: Cross Sectional Strengths

Answer:

â– Able to calculate prevalence of population studied

â– Assesses exposures and outcomes at one time

â– Provides a snapshot of study population

â– Inexpensive

Q: Consolidated Standards of Reporting Trials (CONSORT)

Answer:

a method that has been developed to improve the quality and reporting of RCTs.

It offers a standard way for authors to prepare reports of trial findings, facilitate their complete

and transparent reporting, and aid their critical appraisal and interpretation

Q: In a prospective cohort design.....

Answer:

investigator selects a group of individuals who were exposed to a factor of interest and compares

it to a group of nonexposed individuals and follows both groups to determine the 101incidence

of an outcome (e.g., disease).

Q: Randomized controlled trials Weakness

Answer:

â– Labor intensive

â– Costly

â– Lengthy

â– Sometimes impractical or unethical to conduct

Q: Cohort Studies

Answer:

-can be either prospective or retrospective

-should provide detailed information on the following: subjects' data that are lost or incomplete,

subjects' rates of withdrawal or loss to follow-up, characteristics of subjects that are lost to

follow-up or who have withdrawn from the study, and, when possible, reasons for the dropouts.

-They should also include detailed descriptions of the groups that are included in the analysis of

outcomes (e.g., age, gender, family history, and severity of disease)

Q: Characteristics of the host in diseases

Answer:

age, previous exposures, general health, and immune status

Q: How do they do Kappa statistics

Answer:

you can estimate how reliable this agreement is by subtracting out the percentage expected by

chance alone.

- any kappa below 0.60 indicates inadequate agreement among the raters and little confidence

should be placed in the study result

Q: Completes the following sentence: Systematic errors occur not as the result of chance but

because of inherent inaccuracies in ________.

Answer:

MEASURMENTS

Q: What is the most common aggregate in population based nursing