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WGU D514 EXAM LATEST VERSION -2025/2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
A policy analyst is interested in determining if the prospective payment system
(PPS) has improved hospital efficiency over time during the past ten years. The
sample for analysis consists of ten years of data after the introduction of the PPS
and includes measures of efficiency and other relevant control variables. The
analyst hypothesizes that hospital efficiency should have increased each year after
the PPS was implemented. Which research method should the analyst use?
Time-Series
Cross-Sectional
Pretest-posttest
Randomized Control Trial
Time-Series
Which type of data analysis could be used in quantitative research?
Reporting the gender of participants
Ranking the severity order with 1 as the worst and 4 as the best
Reporting the distribution of results or outcomes
Using categorical variables with 0=no and 1=yes
Reporting the distribution of results or outcomes
What is a characteristic of qualitative research methods?
Utilizes large sample sizes
Determines causal relationships
Generalizes results to the population
Introduces subjectivity to data collection
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Introduces subjectivity to data collection
Many physician practices now utilize an electronic health record (EHR) system that
includes a secure messaging feature. Some of these practices have extended their
contact with patients by conducting virtual visits between people with diabetes
and nurses who are certified diabetes educators. The remote technology includes
the ability to monitor blood glucose data to determine if these values are within
goal range. After six months, the results of the blood glucose levels for the group
participating in the virtual visits were evaluated.Which research method was
used?
Time-series
Clinical trial
Pretest-posttest
Cross-sectional
Cross-sectional
A researcher wants to determine whether continuity of care is improved with the
use of coordination of care documents among primary care physicians and
specialists. The researcher decides to review various published studies to assess
the clinical effectiveness of these documents on patient outcomes.Which research
method is being used?
Case study
Cohort study
Meta-analysis
Literature review
Meta-analysis
The state public health researcher wants to begin a five-year initiative to
coordinate immunizations for children in the foster care system. The results will be
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compared to previous years to measure the effectiveness of the initiative.Which
research method should be used to study this initiative?
Case study
Cohort study
Longitudinal study
Pre/post-study
Pre/post-study
Using publicly reported data from Centers for Medicare & Medicaid Services,
researchers want to examine the relationship between 30-day readmissions and
mortality rates for patients with heart failure at five facilities. Before this can be
done, researchers need to estimate mortality rates and readmission rates from
heart failure.Which statistical technique should be used to calculate the estimated
rates?
t-test
Analysis of variance
Regression analysis
Pearson product-moment correlation coefficient
Regression analysis
Researchers want to determine if a particular risk factor or risk factors are
associated with the frequency for nonelective readmission within 30 days among
patients with diabetes in a metropolitan area. The variables of interest include
age, gender, race/ethnicity, and insurance status.Which statistical technique
should be used?
Mann-Whitney U test
Bayesian approach
Regression analysis
WGU D514 EXAM LATEST VERSION -2025/2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
A policy analyst is interested in determining if the prospective payment system
(PPS) has improved hospital efficiency over time during the past ten years. The
sample for analysis consists of ten years of data after the introduction of the PPS
and includes measures of efficiency and other relevant control variables. The
analyst hypothesizes that hospital efficiency should have increased each year after
the PPS was implemented. Which research method should the analyst use?
Time-Series
Cross-Sectional
Pretest-posttest
Randomized Control Trial
Time-Series
Which type of data analysis could be used in quantitative research?
Reporting the gender of participants
Ranking the severity order with 1 as the worst and 4 as the best
Reporting the distribution of results or outcomes
Using categorical variables with 0=no and 1=yes
Reporting the distribution of results or outcomes
What is a characteristic of qualitative research methods?
Utilizes large sample sizes
Determines causal relationships
Generalizes results to the population
Introduces subjectivity to data collection
, 2
Introduces subjectivity to data collection
Many physician practices now utilize an electronic health record (EHR) system that
includes a secure messaging feature. Some of these practices have extended their
contact with patients by conducting virtual visits between people with diabetes
and nurses who are certified diabetes educators. The remote technology includes
the ability to monitor blood glucose data to determine if these values are within
goal range. After six months, the results of the blood glucose levels for the group
participating in the virtual visits were evaluated.Which research method was
used?
Time-series
Clinical trial
Pretest-posttest
Cross-sectional
Cross-sectional
A researcher wants to determine whether continuity of care is improved with the
use of coordination of care documents among primary care physicians and
specialists. The researcher decides to review various published studies to assess
the clinical effectiveness of these documents on patient outcomes.Which research
method is being used?
Case study
Cohort study
Meta-analysis
Literature review
Meta-analysis
The state public health researcher wants to begin a five-year initiative to
coordinate immunizations for children in the foster care system. The results will be
, 3
compared to previous years to measure the effectiveness of the initiative.Which
research method should be used to study this initiative?
Case study
Cohort study
Longitudinal study
Pre/post-study
Pre/post-study
Using publicly reported data from Centers for Medicare & Medicaid Services,
researchers want to examine the relationship between 30-day readmissions and
mortality rates for patients with heart failure at five facilities. Before this can be
done, researchers need to estimate mortality rates and readmission rates from
heart failure.Which statistical technique should be used to calculate the estimated
rates?
t-test
Analysis of variance
Regression analysis
Pearson product-moment correlation coefficient
Regression analysis
Researchers want to determine if a particular risk factor or risk factors are
associated with the frequency for nonelective readmission within 30 days among
patients with diabetes in a metropolitan area. The variables of interest include
age, gender, race/ethnicity, and insurance status.Which statistical technique
should be used?
Mann-Whitney U test
Bayesian approach
Regression analysis
