WGU D514 ANALYTICAL METHODS OF HEALTHCARE
LEADERS OA TEST EXAM 2026 OBJECTIVE ASSESSMENT
NEWEST STUDY QUESTIONS WITH CORRECT ANSWERS
100% GUARANTEED PASS | ASSURED A+
Researchers investigated the effectiveness of a surgical checklist intervention in order to reduce
pneumonia and death rates for surgical patients.
Surgical Intervention Outcome for Death and Pneumonia
Patient Number Pneumonia Death
Pre 546 2.0 3.1
Post 542 2.7 2.7
p-value <0.46 0.003
How did this intervention impact patient outcomes?
The p-value indicates a significant reduction in death rates.
The p-value indicates a significant reduction in pneumonia.
There was a significant decrease in pneumonia and death rates.
There was no significant decrease in pneumonia and death rates. - Answer>>> The p-value
indicates a significant reduction in death rates.
An orthopedic surgical team implemented a new approach for a knee replacement procedure due
to a high rate of failure with the prior procedure. After six months, the team wants to evaluate all
patients receiving the new procedure.Which data source is needed for this analysis report?
National Institutes of Health (NIH)
Centers for Medicare and Medicaid Services (CMS)
Length of Stay (LOS)
Electronic Health Record (EHR) - Answer>>> Electronic Health Record (EHR)
,A group of doctors studied exercise tolerance in obese patients in a clinical trial. The doctors
examined computer-assisted and conventional treatment programs to identify whether computer-
assisted methods would reduce risk of injury. Which risk adjustment technique should be used
for this study?
Demographic variables
Stratification analysis
Regression analysis
Confounding variables - Answer>>> Stratification analysis- dividing members of a population
into homogeneous subgroups before sampling. Compare new surgical intervention to
conventional surgery.
A hospital financial analyst is evaluating the return on investment following the purchase of new
endoscopy equipment.Which data source is needed for an analysis report?
LOS
CMS
Claims records
Reimbursement records - Answer>>> Reimbursement records
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
Wilcoxon signed-rank test - Answer>>> Regression analysis
, A hospital researcher is interested in investigating the association between hospital ownership
(i.e., government, investor, and not-for-profit) on overall hospital quality scores.Research
MethodsA cross-sectional data set of all urban hospitals from eight states is used in this study.
The data were obtained from various administrative databases: Medicare Hospital Cost Report
Information System, the American Hospital Association, and the Area Health Resource File.
Descriptive statistics are used to summarize the data. An ordinary least squares regression is used
to test the relationship between ownership status and hospital quality while controlling for
hospital and market characteristics.Which component is missing from these research methods?
Analysis plan
Data collection
Study population
Research design - Answer>>> Research design
This database is queried as part of the physician credentialing process when applying for medical
staff privileges and every two years afterward. It contains data on medical malpractice, adverse
licensure actions, suspensions, certain professional review actions, such as denial of medical
staff privileges. - Answer>>> National Practitioner Data Bank (NPDB)
Acute care and skilled nursing facility claims data. Demographics on patient, information on
provider, on Medicare coverage for the claim, total charges, charges broken down, codes and
diagnostic related group (DRG) data. Only contains data on Medicare patients. - Answer>>>
Medicare Provider Analysis and Review (MEDPAR)
Medical screening and medical are two fundamental strategies for optimizing employee health.
Medical screening is only one component of a comprehensive medical program. The
fundamental purpose of screening is early diagnosis and treatment of the individual and thus has
a clinical focus - Answer>>> Surveillance records
A part of the U.S. Department of Health and Human Services, is the nation's medical research
agency — making important discoveries that improve health and save lives - Answer>>>
National Center for Health Statistics (NCHS)
LEADERS OA TEST EXAM 2026 OBJECTIVE ASSESSMENT
NEWEST STUDY QUESTIONS WITH CORRECT ANSWERS
100% GUARANTEED PASS | ASSURED A+
Researchers investigated the effectiveness of a surgical checklist intervention in order to reduce
pneumonia and death rates for surgical patients.
Surgical Intervention Outcome for Death and Pneumonia
Patient Number Pneumonia Death
Pre 546 2.0 3.1
Post 542 2.7 2.7
p-value <0.46 0.003
How did this intervention impact patient outcomes?
The p-value indicates a significant reduction in death rates.
The p-value indicates a significant reduction in pneumonia.
There was a significant decrease in pneumonia and death rates.
There was no significant decrease in pneumonia and death rates. - Answer>>> The p-value
indicates a significant reduction in death rates.
An orthopedic surgical team implemented a new approach for a knee replacement procedure due
to a high rate of failure with the prior procedure. After six months, the team wants to evaluate all
patients receiving the new procedure.Which data source is needed for this analysis report?
National Institutes of Health (NIH)
Centers for Medicare and Medicaid Services (CMS)
Length of Stay (LOS)
Electronic Health Record (EHR) - Answer>>> Electronic Health Record (EHR)
,A group of doctors studied exercise tolerance in obese patients in a clinical trial. The doctors
examined computer-assisted and conventional treatment programs to identify whether computer-
assisted methods would reduce risk of injury. Which risk adjustment technique should be used
for this study?
Demographic variables
Stratification analysis
Regression analysis
Confounding variables - Answer>>> Stratification analysis- dividing members of a population
into homogeneous subgroups before sampling. Compare new surgical intervention to
conventional surgery.
A hospital financial analyst is evaluating the return on investment following the purchase of new
endoscopy equipment.Which data source is needed for an analysis report?
LOS
CMS
Claims records
Reimbursement records - Answer>>> Reimbursement records
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
Wilcoxon signed-rank test - Answer>>> Regression analysis
, A hospital researcher is interested in investigating the association between hospital ownership
(i.e., government, investor, and not-for-profit) on overall hospital quality scores.Research
MethodsA cross-sectional data set of all urban hospitals from eight states is used in this study.
The data were obtained from various administrative databases: Medicare Hospital Cost Report
Information System, the American Hospital Association, and the Area Health Resource File.
Descriptive statistics are used to summarize the data. An ordinary least squares regression is used
to test the relationship between ownership status and hospital quality while controlling for
hospital and market characteristics.Which component is missing from these research methods?
Analysis plan
Data collection
Study population
Research design - Answer>>> Research design
This database is queried as part of the physician credentialing process when applying for medical
staff privileges and every two years afterward. It contains data on medical malpractice, adverse
licensure actions, suspensions, certain professional review actions, such as denial of medical
staff privileges. - Answer>>> National Practitioner Data Bank (NPDB)
Acute care and skilled nursing facility claims data. Demographics on patient, information on
provider, on Medicare coverage for the claim, total charges, charges broken down, codes and
diagnostic related group (DRG) data. Only contains data on Medicare patients. - Answer>>>
Medicare Provider Analysis and Review (MEDPAR)
Medical screening and medical are two fundamental strategies for optimizing employee health.
Medical screening is only one component of a comprehensive medical program. The
fundamental purpose of screening is early diagnosis and treatment of the individual and thus has
a clinical focus - Answer>>> Surveillance records
A part of the U.S. Department of Health and Human Services, is the nation's medical research
agency — making important discoveries that improve health and save lives - Answer>>>
National Center for Health Statistics (NCHS)
