Exam (elaborations)
NR 503 Week 8 Final Quiz (LATEST) 100% Correct Answers
- Course
- Institution
NR 503 Week 8 Final Quiz (LATEST) 100% Correct Answers
[Show more]
Content preview
NR 503 Week 8 FinalQuestion 1
Which of the following is the primary goal of epidemiology?
A) To identify the causes of diseases
B) To develop new treatment protocols
C) To provide clinical care to patients
D) To monitor laboratory test results
Answer: A) To identify the causes of diseases
Question 2
,Which measure is used to assess the frequency of a disease in a population over a
specific period of time?
A) Incidence rate
B) Prevalence rate
C) Mortality rate
D) Case fatality rate
Answer: A) Incidence rate
Question 3
In a cohort study, what is the primary difference between a cohort study and a case-
control study?
A) Cohort studies assess exposure first, while case-control studies assess outcome
first
B) Cohort studies are retrospective, while case-control studies are prospective
C) Case-control studies are more expensive than cohort studies
D) Cohort studies focus on treatment efficacy, while case-control studies focus on
exposure rates
Answer: A) Cohort studies assess exposure first, while case-control studies assess
outcome first
Question 4
What type of bias occurs when participants are selected in a way that does not
represent the general population?
A) Selection bias
B) Information bias
C) Confounding bias
D) Measurement bias
,Answer: A) Selection bias
Question 5
Which statistical test would be appropriate to determine if there is an association
between two categorical variables?
A) T-test
B) Chi-square test
C) ANOVA
D) Regression analysis
Answer: B) Chi-square test
Question 6
What is the purpose of randomization in a clinical trial?
A) To ensure that every participant gets the same treatment
B) To minimize selection bias and ensure comparability between groups
C) To make the trial more cost-effective
D) To ensure that all participants are equally aware of the study objectives
Answer: B) To minimize selection bias and ensure comparability between groups
Question 7
Which of the following is an example of a measure of central tendency?
A) Standard deviation
B) Variance
C) Mean
D) Range
, Answer: C) Mean
Question 8
The concept of “confounding” refers to:
A) A situation where the effect of one variable on an outcome is mixed up with the
effect of another variable
B) A situation where data is lost during data collection
C) A situation where study participants are not aware of their group assignment
D) A situation where a control group is not used
Answer: A) A situation where the effect of one variable on an outcome is mixed up
with the effect of another variable
Question 9
Which study design is best suited for evaluating the effectiveness of a new
medication?
A) Cross-sectional study
B) Case-control study
C) Randomized controlled trial
D) Observational cohort study
Answer: C) Randomized controlled trial
Question 10
What is the term used for the proportion of people with a disease who test positive
for that disease?
A) Sensitivity
B) Specificity
C) Positive predictive value
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Alvon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78834 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now