MPH516 Module 2 Quiz Latest 2021 August

Question # 00629296
Course Code : MPH516
Subject: Urban Planning and Policy
Due on: 10/07/2021
Posted On: 10/07/2021 05:39 AM
Tutorials: 1
Rating:
4.9/5
Question Dot Image

MPH516 Epidemiology and Biostatistics for Public Health Application 2

Module 2 Quiz

Question 1Surgeons at Hospital A report that the mortality rate at the end of a one-year follow-up after a new coronary bypass procedure is 15%. At Hospital B, the surgeons report a one-year mortality rate of 8% for the same procedure. Before concluding that the surgeons at Hospital B have vastly superior skill, which of the following possible confounders would you examine?

   The severity (stage. of disease of the patients at the two hospitals at baseline

The starting point of the one-year follow-up at both hospitals (after operation versus after discharge.

Difference in the postoperative care at the two hospitals

Equally thorough follow-up for mortality

All are correct.

Question 2In a study to determine the incidence of a chronic disease, 150 people were examined at the end of a three-year period. Twelve cases were found, giving a cumulative risk of 8%. Fifty other members of the initial cohort could not be examined; 20 of these 50 could not be examined because they died. Which source of bias may have affected the study?

Information bias: interviewer/abstractor bias

Hawthorne effect

Selection bias: survival bias

Information bias: recall bias

Question 3An epidemiologic experiment is performed in which one group is exposed to a suspected factor and the other is not. All individuals with an odd hospital admission number are assigned to the second group. The main purpose of this procedure is to:

ensure a double-blind study.

prevent observer bias with respect to the factor.

prevent observer bias with respect to the outcome.

improve the likelihood that the two groups will be comparable with regard to known and unknown confounding factors.

guarantee comparability of the two groups with regard to other relevant factors.

Question 4Which of the following is an independent-measures design?

All participants perform in all conditions.

Each participant is tested twice, once in each condition.

Different participants perform in each condition.

None of these are correct.

 

Question 5What does the error bar on an error bar chart represent?

The confidence interval round the mean.

The standard error of the mean.

The standard deviation of the mean.

It can represent any of a, b or c.

Question 6A double-blind study of a vaccine is one in which:

the study group receives the vaccine and the control group receives a placebo.

neither observers nor subjects know the nature of the placebo.

neither observers nor subjects know which subject receives the vaccine and which receives a placebo.

neither the study group nor the control group knows the identity of the observers.

the control group does not know the identity of the study group.

Question 7An independent t-test is used to test for

Differences between means of groups containing different people when the data are normally distributed, have equal variances and data are at least interval.

Differences between means of groups containing different people when the data are not normally distributed or have unequal variances.

Differences between means of groups containing the same people when the data are normally distributed, have equal variances and are at least interval.

Differences between means of groups containing different people when the data are not normally distributed or have unequal variances.

Question 8From the table below, did the independent variable have an effect?

Yes, there is a statistically significant effect.

Yes, but the effect was not statistically significant.

Not enough information.

No, it is not statistically insignificant.

Question 9The purpose of a double-blind study is to:

achieve comparability of cases and controls.

reduce the effects of sampling variation.

avoid observer and interviewee bias.

avoid observer bias and sampling variation.

avoid interviewee bias and sampling variation.

 

Question 10Which of the following would you consider to be an example of repeated-measures design?

6 participants are given analgesia and 6 a placebo; effects of pain relief after 4 hours is recorded.

12 participants are given analgesia, 6 are asked to record pain level after 2 hours and the remaining 6 participants after 4 hours.

12 participants are asked to record pain level after 4 hours then given analgesia.

None of the these are examples of repeated-measures design

Question 11You are investigating the role of physical activity in heart disease and suggest that physical activity protects against having a heart attack. While presenting these data to your colleagues, someone asks if you have thought about confounders such as factor X. This factor X could have confounded your interpretation of the data if it:

is a factor for some other disease, but not heart disease.

is a factor associated with physical activity and heart disease.

is a part of the pathway by which physical activity affects heart disease.

has caused a lack of follow-up of test subjects.

 Question 12Participants take a simulated driving test twice. In one condition they have no alcohol, in the other they have enough alcohol to take them over the legal limit. What type of design is this?

Repeated-measures

Related-measures

Between-subjects

Independent-measures

Question 13What is important to understand about differences between variables?

Relationships can be established.

Random studies can be undertaken.

Causal inferences can be made.

Relationships between variables can be significant.

Question 14From the table below, indicate how many people took part in this experiment?

37

38

39

40

Question 15The strategy that is not aimed at reducing selection bias is:

   development of an explicit case definition.

encouragement of high participation rates.

standardized protocol for structured interviews.

enrollment of all cases in a defined time and region.

Question 16Which of the following is a technique to reduce information bias?

Use memory aids and validate exposures.

Provide standardized training sessions and protocols.

Use standardized collection forms.

Try to ensure that questions are clearly understood.

All are correct.

Question 17A repeated-measures design would be appropriate for which of the following situations?

A researcher would like to study the effect of alcohol on reaction time.

A researcher would like to compare individuals from at least two populations.

The effect of a new treatment is studied in a small group of individuals with a rare condition.

a and b.

Question 18When using the independent t-test which assumption(s) should be made?

Normally distributed sample

Homogeneity of variance

Data at least categorical

a and b

Question 19What was the dependent variable in the table below?

Variances

Number correct

Equal assumptions

Not given in table

Independent Samples Testt-test for Equality of Means

tdfSig. (2-tailed)

number correctEqual variances assumed10.99138.000

Equal variances not assumed10.99130.727.000

Question 20In a t-test to determine whether analgesia or a placebo provide pain relief, the t-value obtained for the two-tailed probability p is found to be a low number at p = .042. What can be deduced about this result? of your textbook for more information on this question.

There is a 4.2% chance that the null hypothesis will be true.

There is a 2.1% chance that the null hypothesis will be true.

There is a 4.2% chance that the null hypothesis will be false.

There is a 2.1% chance that the null hypothesis will be false.

 

Dot Image
dominator0831 Posted By :
Questions: 9146 Tutorials: 9128
Tutorials for this Question

MPH516 Module 2 Quiz Latest 2021 August

Tutorial # 00628046
Posted On: 10/07/2021 05:43 AM
Feedback Score: Not rated yet!
Purchased By: 2
dominator0831
Posted By:
Questions:
9146
Tutorials:
9128
Report this Tutorial as Inappropriate
Tutorial Preview
The solution of MPH516 Module 2 Quiz Latest 2021 August...
Attachments
Module_2_Quiz.docx (111.39 KB)

Great! We have found the solution of this question!

Related Questions
MPH516 Module 8 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 8 Discussion Epidemiology and Health Policy Purpose Discussions are designed to promote dialogue between facul …
MPH516 Module 4 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 4 Discussion Infectious Disease Epidemiology Purpose Discussions are designed to promote dialogue between facu …
MPH516 Module 3 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 3 Discussion Screening for Disease Purpose Discussions are designed to promote dialogue between faculty and st …
MPH516 Module 6 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 6 Discussion Molecular and Genetic Applications in Epidemiology Purpose Discussions are designed to promote di …
MPH516 Module 1 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 1 Discussion Measures of Effect Purpose Discussions are designed to promote dialogue between faculty and stude …
MPH516 Module 5 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 5 Discussion Environmental and Occupational Applications of Epidemiology Purpose Discussions are designed to p …
MPH516 Module 2 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 2 Discussion Impacts of Data Interpretation Issues Purpose Discussions are designed to promote dialogue betwee …
MPH516 Module 7 Discussion Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 7 Discussion Understanding Social and Behavioral Associations in Epidemiology Purpose Discussions are designed …
MPH516 Module 8 Assignment Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 8 Assignment   Epidemiological Study Purpose The purpose of this assignment is to apply knowledge of epide …
MPH516 Module 6 Assignment Latest 2021 August
MPH516 Epidemiology and Biostatistics for Public Health Application 2 Module 6 Assignment   Repeated Measures ANOVA Purpose The purpose of this assignment is to apply knowledge of dat …
Recent Questions
regis college nu641 exam
any exam questions …
Walden HLTH6412 Complete Course Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 1 Discussion EVIDENCE BASED RESOURCES You have probably heard of evidence-based medicine, but have you heard of evidenc …
Walden HLTH6412 All Assignments Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 1 Assignment DISTINGUISHING RELIABLE SOURCES OF INFORMATION Ensuring that you utilize reliable health information to in …
Walden HLTH6412 Module 6 Assignment Latest 2025
HLTH6412 Health Ed & Comm. Strategies Module 6 Assignment FINAL PROJECT Each day the public is exposed to many different forms of health communication. Health communications and the healt …
Walden HLTH6412 Module 5 Assignment 3 Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 5 Assignment 3 INFOGRAPHIC FOR HEALTH EDUCATION TO E-LEARNING Keeping in mind the knowledge you gained from completing …
Walden HLTH6412 Module 5 Assignment 2 Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 5 Assignment 2 INTRODUCTION TO DATA STORYTELLING WITH INFOGRAPHIC This assignment explores how much an infographic can …
Walden HLTH6412 Module 5 Assignment 1 Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 5 Assignment 1 USING ARTIFICIAL INTELLIGENCE IN HEALTH EDUCATION It may be difficult to believe that the term Artificia …
Walden HLTH6412 Module 3 Assignment 2 Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 3 Assignment 2 ASSESSING CULTURAL COMPETENCE Being a culturally competent health educator can help reduce the health eq …
Walden HLTH6412 Module 3 Assignment 1 Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 3 Assignment 1 ASSESSING PERSONAL BIAS Bias is a result of our environment and background. We often make quick judgment …
Walden HLTH6412 Module 2 Assignment 2 Latest 2025
HLTH6412-1/HLTH8412E-1/HLTH5412 Health Ed & Comm. Strategies Module 2 Assignment 2 ASSESSING THE HEALTH LITERACY LEVEL OF HEALTH EDUCATION MATERIALS Carson, the community health educator …