WGU D514 CORRECT TEST PAPER QUESTIONS
AND ANSWERS SURE 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. - ✔✔The p-value
indicates a significant reduction in death rates.
✔✔A facilitator meets with several healthcare staff members to get feedback and input
about how the staff thinks the goal of increasing hand washing through observation
methods has worked.Which research method is being used by the facilitator?
Focus group
In-person survey
Document review
Indirect observation - ✔✔Focus Group
✔✔A large teaching hospital is preparing to implement a hand hygiene protocol to
reduce infection rates. To do this, the research team will evaluate best practices and
outcomes from other facilities.What is the appropriate research method to prepare for
the new protocol?
Interview
Observation
Chart review
Literature review - ✔✔Literature review
, ✔✔A nutritionist is assessing the impact of patient education on dietary behavior. The
treatment involves having a group attend a cooking class. They will then be assessed
on the likelihood of using the cooking information learned.Which data source should the
nutritionist use?
Post-op exam results
Posttest exam results
Participant obesity levels
Statewide education levels - ✔✔Posttest exam results
✔✔The director of quality improvement is studying potential reasons for increased
readmissions at a hospital.Which type of data is needed for an analysis report?
Press Ganey data
Financial claims data
Electronic health records
Insurance claims records - ✔✔Electronic health records
✔✔A researcher is studying a new treatment program that studies the impact of
nutrition education programs on the incidence of adult-onset diabetes among low-
income residents.Which risk adjustment technique should be used?
Bivariate analysis
Comparison of means
Demographic data comparison
Analysis with confounding variable - ✔✔Analysis with confounding variable
✔✔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 - ✔✔Stratification analysis- dividing members of a population
into homogeneous subgroups before sampling. Compare new surgical intervention to
conventional surgery.
✔✔A local physical activity initiative was designed to increase the physical activity for
working mothers.What is a categorical variable that could be used to determine whether
the initiative is beneficial?
Hours of physical activity per day
Number of children that the mother has
Method by which the mothers commute to work
Hours spent in front of the computer per day - ✔✔Method by which the mothers
commute to work
AND ANSWERS SURE 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. - ✔✔The p-value
indicates a significant reduction in death rates.
✔✔A facilitator meets with several healthcare staff members to get feedback and input
about how the staff thinks the goal of increasing hand washing through observation
methods has worked.Which research method is being used by the facilitator?
Focus group
In-person survey
Document review
Indirect observation - ✔✔Focus Group
✔✔A large teaching hospital is preparing to implement a hand hygiene protocol to
reduce infection rates. To do this, the research team will evaluate best practices and
outcomes from other facilities.What is the appropriate research method to prepare for
the new protocol?
Interview
Observation
Chart review
Literature review - ✔✔Literature review
, ✔✔A nutritionist is assessing the impact of patient education on dietary behavior. The
treatment involves having a group attend a cooking class. They will then be assessed
on the likelihood of using the cooking information learned.Which data source should the
nutritionist use?
Post-op exam results
Posttest exam results
Participant obesity levels
Statewide education levels - ✔✔Posttest exam results
✔✔The director of quality improvement is studying potential reasons for increased
readmissions at a hospital.Which type of data is needed for an analysis report?
Press Ganey data
Financial claims data
Electronic health records
Insurance claims records - ✔✔Electronic health records
✔✔A researcher is studying a new treatment program that studies the impact of
nutrition education programs on the incidence of adult-onset diabetes among low-
income residents.Which risk adjustment technique should be used?
Bivariate analysis
Comparison of means
Demographic data comparison
Analysis with confounding variable - ✔✔Analysis with confounding variable
✔✔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 - ✔✔Stratification analysis- dividing members of a population
into homogeneous subgroups before sampling. Compare new surgical intervention to
conventional surgery.
✔✔A local physical activity initiative was designed to increase the physical activity for
working mothers.What is a categorical variable that could be used to determine whether
the initiative is beneficial?
Hours of physical activity per day
Number of children that the mother has
Method by which the mothers commute to work
Hours spent in front of the computer per day - ✔✔Method by which the mothers
commute to work
