WGU D514 ACTUAL STUDY EXAMS QUESTIONS
AND ANSWERS SURE A+
✔✔Tests relationship between 2 quantitative variables- used with interval and ordinal.
Type of regression analysis done frequently. As person ages, height increases -
✔✔Pearson's Correlation Coefficient
✔✔Used to study linear relationship between depended variable (risk of skin cancer)
and independent variable (sun exposure) - ✔✔Linear Regression
✔✔Processes large amount of data quickly. Need it now - ✔✔Multidimensional
database
✔✔Participants identified through a number key system - ✔✔Research Identified
✔✔national practitioner data base - ✔✔used when onboarding physicians
✔✔Agency healthcare research and quality AHRQ - ✔✔Produces evidence to make HC
safer, high quality, etc.
✔✔Hospital consumer assessment of HC providers and systems HCAHPS - ✔✔Pt
satisfaction survey required by CMS
✔✔Medical expenditure panel survey MEPS - ✔✔Lrg scale survey of families and
individuals, their medical providers, and employers.1
✔✔Analyze data from specific point in time - ✔✔Prevalence (cross sectional)
✔✔Research design - ✔✔how
✔✔Study population - ✔✔who
, ✔✔data collection - ✔✔where
✔✔analysis plan - ✔✔what
✔✔Group of participants over time - ✔✔cohort
✔✔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: 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? - ✔✔Linear regression
✔✔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? - ✔✔Regression analysis
✔✔Several community health centers across a rural state are gathering data on their
prediabetic 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? - ✔✔ANOVA
✔✔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 - ✔✔Time series
✔✔There are two standard treatments for children with ADHD who display a specific 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 proposes a comparison of the two
interventions to determine which is preferable. The children will be randomized to one of
AND ANSWERS SURE A+
✔✔Tests relationship between 2 quantitative variables- used with interval and ordinal.
Type of regression analysis done frequently. As person ages, height increases -
✔✔Pearson's Correlation Coefficient
✔✔Used to study linear relationship between depended variable (risk of skin cancer)
and independent variable (sun exposure) - ✔✔Linear Regression
✔✔Processes large amount of data quickly. Need it now - ✔✔Multidimensional
database
✔✔Participants identified through a number key system - ✔✔Research Identified
✔✔national practitioner data base - ✔✔used when onboarding physicians
✔✔Agency healthcare research and quality AHRQ - ✔✔Produces evidence to make HC
safer, high quality, etc.
✔✔Hospital consumer assessment of HC providers and systems HCAHPS - ✔✔Pt
satisfaction survey required by CMS
✔✔Medical expenditure panel survey MEPS - ✔✔Lrg scale survey of families and
individuals, their medical providers, and employers.1
✔✔Analyze data from specific point in time - ✔✔Prevalence (cross sectional)
✔✔Research design - ✔✔how
✔✔Study population - ✔✔who
, ✔✔data collection - ✔✔where
✔✔analysis plan - ✔✔what
✔✔Group of participants over time - ✔✔cohort
✔✔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: 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? - ✔✔Linear regression
✔✔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? - ✔✔Regression analysis
✔✔Several community health centers across a rural state are gathering data on their
prediabetic 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? - ✔✔ANOVA
✔✔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 - ✔✔Time series
✔✔There are two standard treatments for children with ADHD who display a specific 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 proposes a comparison of the two
interventions to determine which is preferable. The children will be randomized to one of
