analytical methods of healthcare leaders wgu d514 test exam
questions and correct answers (latest updated version )
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1. In conversations with her patients, a physical therapist notices that patients who
are on Workman's Compensation and have supportive supervisors, eager for them to
return to work, have more positive outcomes in rehabilitation than those patients
whose supervisors have a negative attitude toward their employee's injury
Answer: insisting they not return to work until they are at 100% because if anything
less they are "useless to the job".
What type of test could the therapist use to see if these two factors have a
measurable relationship?
Answer: Linearregression
2. Data analysts at a large metropolitan hospital need to determine risk factors
associated with readmission within 30 days via the hospital's emergency room among
patients with COPD. The variables of interest include age, gender, race/ethnicity,
,insurance status, and family support. Which statistical technique should be used?
Answer: Regression analysis
3. Several community health centers across a rural state are gathering data on
their pre-diabetic patients and using A1c levels as a baseline measurement to
include patients in a research project. Three different interventions will be applied.
One group of patients will receive a special diet to follow; the second group will work
with physical therapists on a regular exercise program; the third group will follow
the diet and engage in the exercise.
Which statistical test will be appropriate to use to determine which treatment is most
effective in controlling pre-diabetes?
Answer: ANOVA
4. A hospital CFO is analyzing the cost benefits of using the patient reminder system,
which was implemented over a year ago, to see if the automated system results in
less missed appointments ("no-shows").
She is comparing quarterly reports from this past year on volume of patients who did
not show up to their appointments, to the volume of patients of
the previous year, who did not show up to their appointments, to see if the
,automated system has proven effective. She is considering other variables
as she reviews the data, but is primarily analyzing the number of "no-show" patients
from last year's quarterly reports to this year's.
Answer: time series
5. There are two standard treatments for children with ADHD who display a spe- cific set
of characteristics. One treatment is a cognitive behavioral intervention, and the other
is a dietary and biomedical intervention. Both treatments have equally strong clinical
evidence supporting their efficacy. A researcher propos- es a comparison of the two
interventions to determine which is preferable. The children will be randomized to
one of two groups
Answer: half of the children will receive the cognitive behavioral intervention and the
other half of the children will receive the dietary and biomedical intervention. Which
test is appropriate to determining the preferable treatment?
Answer: Cross-sectional
6. The vice president, CMO, and Operations Team collected data on resources
used by patients who have undergone coronary bypass and the length of stays for a
defined population of patients who received CABG surgery. Since the raw data is
complex to discuss and evaluate, the team will use descriptive statistics to analyze the
, data to support their decisions for recommendations.
Which of the following descriptive statistics could prove the most usefu
Answer: The
mean (average) length of stay and
The mean number of providers seeing each patient each day
7. Operates through CDC; the National Health Care Surveys are designed to answer
key questions of interest to health care policy makers, public health professionals, and
researchers.
Answer: National Healthcare Survey
8. Operates through the CDC: data on birth, death, marriages, divorces, and fetal deaths.
Answer: National Center for Health Statistics (NCHS)
9. Incidence and prevalence of diseases, survival statistics, high-risk popula- tions,
trends over time. Data gathered from medical records, surveys, inter- views. NCHS
has responsibility for these databases.
Answer: PublicHealthDatabases
10. 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