WGU D514 QUESTIONS AND CORRECT ANSWERS

WGU D514 QUESTIONS AND
CORRECT ANSWERS



The quality improvement team is reviewing quarterly incident reports and evaluating th
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e effect of Six Sigma strategies on the quantity of medication errors over the past two
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years. The team hypothesizes a continuous reduction in medical errors for each quart
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er.The sample consists of patient clinical and demographic characteristics. Unfortunate
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ly, causation cannot be determined from the data available.Which research method sh
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ould be used to test the team's hypothesis?
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Time-Series
Cross-Sectional
Pretest-posttest
Randomized Control Trial - ans-Time-series zz zz zz zz




A hospital researcher has access to one year of hospital emergency department claim
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s data. The researcher is investigating the association of race on the timeliness of deli
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very of care. The sample includes information on patient demographics, insurance info
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rmation, and emergency department factors. Due to patient confidentiality, the sample
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does not include patient clinical information and outcomes.Which research method sho
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uld be used?zz zz


Time-Series
Cross-Sectional
Pretest-posttest
Randomized Control Trial - ans-Cross Sectional zz zz zz zz zz




A policy analyst is interested in determining if the prospective payment system (PPS)
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has improved hospital efficiency over time during the past ten years. The sample for a
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nalysis consists of ten years of data after the introduction of the PPS and includes me
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asures of efficiency and other relevant control variables. The analyst hypothesizes that
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hospital efficiency should have increased each year after the PPS was implemented.
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Which research method should the analyst use?
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Time-Series
Cross-Sectional
Pretest-posttest
Randomized Control Trial - ans-Time-Series zz zz zz zz




Which type of data analysis could be used in quantitative research?
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Reporting the gender of participants zz zz zz zz


Ranking the severity order with 1 as the worst and 4 as the best
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, Reporting the distribution of results or outcomes
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Using categorical variables with 0=no and 1=yes - ans-
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Reporting the distribution of results or outcomes
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What is a characteristic of qualitative research methods?
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Utilizes large sample sizes zz zz zz


Determines causal relationships zz zz


Generalizes results to the population zz zz zz zz


Introduces subjectivity to data collection - ans-Introduces subjectivity to data collection
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Many physician practices now utilize an electronic health record (EHR) system that inc
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ludes a secure messaging feature. Some of these practices have extended their conta
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ct with patients by conducting virtual visits between people with diabetes and nurses w
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ho are certified diabetes educators. The remote technology includes the ability to moni
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tor blood glucose data to determine if these values are within goal range. After six mo
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nths, the results of the blood glucose levels for the group participating in the virtual visi
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ts were evaluated.Which research method was used?
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Time-series
Clinical trial zz


Pretest-posttest
Cross-sectional - ans-Cross-sectional zz zz




A researcher wants to determine whether continuity of care is improved with the use o
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f coordination of care documents among primary care physicians and specialists. The
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researcher decides to review various published studies to assess the clinical effectiven
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ess of these documents on patient outcomes.Which research method is being used?
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Case study zz


Cohort study zz


Meta-analysis
Literature review - ans-Meta-analysis zz zz zz




The state public health researcher wants to begin a five-
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year initiative to coordinate immunizations for children in the foster care system. The r
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esults will be compared to previous years to measure the effectiveness of the initiative
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.Which research method should be used to study this initiative?
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Case study zz


Cohort study zz


Longitudinal study zz


Pre/post-study - ans-Pre/post-study zz zz




Using publicly reported data from Centers for Medicare & Medicaid Services, research
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ers want to examine the relationship between 30-
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day readmissions and mortality rates for patients with heart failure at five facilities. Bef
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ore this can be done, researchers need to estimate mortality rates and readmission rat
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es from heart failure.Which statistical technique should be used to calculate the estima
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ted rates? zz