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WGU D514 OBJECTIVE ASSESSMENT
FINAL/WGU D514 ANALYTICAL METHODS OF
HEALTHCARE LEADERS OA EXAM NEWEST
2025 ACTUAL EXAM TEST BANK 200
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+
A physical therapist notices that patients on Workman's Compensation with supportive supervisors have more positive rehabilitation outcomes than those with supervisors who insist they not return until 100%. What type of test could the therapist use to see if these two factors have a measurable relationship?Linear regression is appropriate because it can assess the relationship between a dependent variable (rehabilitation outcome) and independent variables (Workman's Compensation status and supervisor attitude), assuming outcomes are measured on a continuous scale (e.g., recovery time or functional improvement).
Correct answer: Linear regression
Data analysts at a large metropolitan hospital need to determine risk factors associated with readmission within 30 days via the emergency room among COPD patients, with variables including age, gender, race/ethnicity, insurance status, and family support. Regression analysis should be used because it can model the relationship between multiple independent variables (risk factors) and a dependent variable (readmission),
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identifying which factors are significant predictors. Logistic regression is particularly suitable since readmission is a binary outcome (yes/no).
Correct answer: Regression analysis
Several community health centers across a rural state are gathering data on pre-diabetic patients using A1c levels,
applying three interventions: diet, exercise, or both. Which
statistical test will determine which treatment is most effective in controlling pre-diabetes? ANOVA is appropriate because it compares means across three or more groups (diet, exercise, diet+exercise) to assess differences in a continuous outcome (A1c levels), determining which intervention has the greatest effect.
Correct answer: ANOVA
A hospital CFO is analyzing the cost benefits of a patient reminder system by comparing quarterly "no-show" patient volumes from the past year (with the system) to the previous year (without), primarily focusing on no-show numbers. Time series analysis is suitable because it examines data points collected over time (quarterly reports) to identify trends or changes, such as the effect of the reminder system on no-show rates.
Correct answer: Time series
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Two standard treatments for children with ADHD (cognitive behavioral intervention and dietary/biomedical intervention) are being compared. Children are randomized to one of two groups.Which test is appropriate to determine the preferable treatment?A t-test is appropriate because it compares means between two independent groups (cognitive vs. dietary) on a continuous outcome (e.g., symptom improvement). Cross-sectional is a study design, not a test, and the randomization suggests a controlled trial, not a snapshot comparison.Correct answer: t-test (Note: Original "Cross-sectional" is incorrect; corrected based on context)
The vice president, CMO, and Operations Team collected data on resources used and length of stays for CABG surgery patients, using descriptive statistics. Which descriptive statistics could prove most useful? The mean (average) length of stay and the mean number of providers seeing each patient each day are valuable because they summarize central tendencies, providing actionable insights into resource use and care intensity for decision-making.
Correct answer: The mean (average) length of stay and the mean
number of providers seeing each patient each day
Operates through CDC; designed to answer key questions of interest to health care policymakers, public health professionals,
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and researchers. This is the National Healthcare Survey, which collects data on healthcare delivery and utilization.
Correct answer: National Healthcare Survey
Operates through the CDC: data on birth, death, marriages,
divorces, and fetal deaths. This is the National Center for Health Statistics (NCHS), responsible for vital statistics.
Correct answer: National Center for Health Statistics (NCHS)
Incidence and prevalence of diseases, survival statistics, high- risk populations, trends over time, gathered from medical records, surveys, interviews. NCHS has responsibility for these public health databases.
Correct answer: Public Health Databases
Queried as part of physician credentialing for medical staff privileges and every two years afterward, containing data on medical malpractice, adverse licensure actions, suspensions, and professional review actions. This is the National Practitioner Data Bank (NPDB).
Correct answer: National Practitioner Data Bank (NPDB)
Acute care and skilled nursing facility claims data, including demographics, provider info, Medicare coverage, charges, and