HEALTHCARE LEADERS OA EXAM STUDY
GUIDE 2026/2027 ACCURATE QUESTIONS
WITH CORRECT DETAILED SOLUTIONS ||
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1. Quantitative Research - ANSWER ✔ Involves the analysis of numeric
data, employing statistical methods to draw conclusions and make
inferences. This type of research focuses on variables and aims to measure
and quantify relationships between variables, providing numerical insights.
2. Example of Quantitative Research - ANSWER ✔ Studying the efficacy
and safety of a specific medication in treating a particular medical condition
compared to other treatments or placebo.
3. Example of Quantitative Research - ANSWER ✔ Investigating the
correlation between specific genetic markers and the risk of developing
certain diseases or conditions, such as the BRCA gene and breast cancer
risk.
4. Example of Quantitative Research - ANSWER ✔ Analyzing the cost-
effectiveness of a particular medical intervention or treatment, such as a new
drug or surgical procedure.
5. Example of Quantitative Research - ANSWER ✔ Assessing the impact of
a specific public health intervention, such as a vaccination program, on
disease incidence and prevalence.
6. Key Characteristics of Quantitative Research - ANSWER ✔ Numeric -
measurable, graphs, tables, etc.
,7. Key Characteristics of Quantitative Research - ANSWER ✔ Verifiable,
accurate - value of the data is in the number.
8. Key Characteristics of Quantitative Research - ANSWER ✔ Examples are
sample size (n), mean, median, mode, range, standard deviation.
9. Qualitative Research - ANSWER ✔ Involves the analysis of non-numeric
data, describing observations, experiences, or phenomena. Qualitative
research relies on methods such as interviews, observations, or content
analysis to gather and interpret subjective information. The data is often
categorized before summarizing, allowing for a deeper understanding of
complex and context-specific phenomena.
10.Longitudinal Study - ANSWER ✔ Involves repeated observations of the
same variables over long periods of time.
11.Regression Analysis - ANSWER ✔ A statistical process used to estimate
relationships among variables. It involves modeling and analyzing multiple
variables, especially the relationship between a dependent and independent.
Can include multiple predictors simultaneously to assess their combined
impact on the dependent variable.
12.Predictive Modeling - ANSWER ✔ A process used to identify patterns in
data that can be leveraged to predict the likelihood of a particular outcome.
Involves using current data to make forecasts about future events.
13.Cohort Study - ANSWER ✔ Establishing Links between risk factors and
health outcomes.
14.Prospective or Retrospective - ANSWER ✔ Looking forward or
backwards. Studies a cohort of individuals that share a common exposure
factor to determine its influence on the development of disease, and are
compared with another group of equivalent individuals that were not
exposed to the factor
15.Literature Review - ANSWER ✔ Analyzing articles written by experts
,16.Systematic Review - ANSWER ✔ Gather all available empirical research
to obtain answers to a specific question
17.Meta-Analysis - ANSWER ✔ A method of systematically combining
qualitative and quantitative data from multiple studies to derive a single,
more robust conclusion with enhanced statistical power. It involves the use
of statistical techniques to analyze aggregated data, often leading to
informed decision making and chages in treatment
18.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 - ANSWER ✔ Method by which
the mothers commute to work
19.A physical activity initiative seeks to determine if the number of days
participants exercise varies by gender in order to determine the focus of the
next phase of the initiative.Which type of variable is needed to make this
determination?
Interval variable
Ordinal variable
Continuous variable
Categorical variable - ANSWER ✔ Categorical variable
20.Identify the likelihood of an Ebola virus outbreak in Algeria, Libya, and
Morocco - ANSWER ✔ Predictive modeling
21.Identify the percentage of cases of Ebola by country, as well as the
associated mortality rate - ANSWER ✔ Statistical modeling
22.Determine the percentage of diabetic patients that meet all five wellness
criteria within an accountable care organization - ANSWER ✔ Statistical
modeling
, 23.Evaluate whether remote monitoring could improve the quality of care of all
diabetic patients treated by an accountable care organization - ANSWER ✔
Predictive modeling
24.A pharmaceutical company wants to forecast the potential revenue for
developing a new drug for a rare disease. - ANSWER ✔ Predictive
modeling
25.A pharmaceutical company wants to forecast the increase in demand for a
cancer drug for each of the next ten years. - ANSWER ✔ Predictive
modeling
26.A pharmaceutical company wants to determine the number of diabetic
patients whose A1c levels improved following a 90-day course of a new
drug. - ANSWER ✔ Statistical modeling
27.A pharmaceutical company wants to identify the percentage of cases where
evidence-based medicine aligns with the outcomes for various cancer
treatments. - ANSWER ✔ Statistical modeling
28.An accountable care organization wants to identify the most effective
targeted treatments based on a patient's symptoms. - ANSWER ✔
Predictive modeling
29.A clinician wants to know the number of patients whose symptoms
improved after taking a new drug as compared to those who took a placebo.
- ANSWER ✔ Statistical modeling
30.A dialysis center wants to compare the patient satisfaction rate between
home dialysis versus in-center dialysis. - ANSWER ✔ Statistical modeling
31.Based on the results of a market study of potential surgery patients, a
surgical services manager hires a new reconstructive surgeon.Which
information from the study informed this hiring decision?
Cost of surgical supplies
Age distribution of patients
Quality measures to monitor