Introduction to Health Research Methods 2026/2027 | Health Research
Methods Study Guide, Research Methodology Exam Prep, Quantitative &
Qualitative Research, Evidence-Based Practice, Research Design, Data
Collection, Sampling, Ethics, Data Analysis, Practice Questions, Answers &
Rationales
Question 1: Which of the following best defines the primary purpose of health
research methods?
A. To provide anecdotal evidence for clinical practice
B. To systematically generate new knowledge and answer health-related
questions
C. To replace clinical judgment with statistical models
D. To promote pharmaceutical products through clinical trials
CORRECT ANSWER: B. To systematically generate new knowledge and answer
health-related questions
Rationale: Health research methods are the systematic, disciplined approaches
used to design studies, collect data, analyze results, and draw valid conclusions
that advance medical and public health knowledge. Anecdotal evidence and
product promotion are not the goals of rigorous research.
Question 2: A researcher aims to describe the prevalence of hypertension in a
rural community. Which study design is most appropriate?
A. Randomized controlled trial
B. Case-control study
C. Cross-sectional survey
D. Double-blind experimental study
CORRECT ANSWER: C. Cross-sectional survey
Rationale: A cross-sectional survey measures exposure and outcome
simultaneously in a defined population at one point in time, making it ideal for
estimating prevalence. RCTs and case-control designs are used for other purposes
such as testing interventions or examining rare outcomes.
Question 3: In the research process, what is the correct sequence of the
following steps?
,A. Data collection, hypothesis formulation, analysis, publication
B. Hypothesis formulation, data collection, analysis, interpretation
C. Analysis, hypothesis formulation, data collection, publication
D. Publication, data collection, hypothesis formulation, analysis
CORRECT ANSWER: B. Hypothesis formulation, data collection, analysis,
interpretation
Rationale: Research logically begins with identifying a problem and formulating a
hypothesis, followed by data collection, statistical analysis, and interpretation of
findings. The other sequences violate the logical progression of scientific inquiry.
Question 4: Which of the following is a key characteristic of a good research
question?
A. It is broad and addresses multiple unrelated concepts
B. It is answerable within a reasonable timeframe and resources
C. It guarantees a statistically significant result
D. It requires no prior literature review
CORRECT ANSWER: B. It is answerable within a reasonable timeframe and
resources
Rationale: A well-crafted research question must be feasible, specific, and
answerable given available time, resources, and ethical constraints. Broad or
guaranteed-outcome questions are inappropriate for rigorous research.
Question 5: The FINER criteria for evaluating research questions include all of
the following EXCEPT:
A. Feasible
B. Interesting
C. Novel
D. Expensive
CORRECT ANSWER: D. Expensive
Rationale: FINER stands for Feasible, Interesting, Novel, Ethical, and Relevant.
Cost is a consideration within feasibility, but "Expensive" is not a criterion; in fact,
cost-effectiveness is preferred.
,Question 6: A null hypothesis in health research typically states that:
A. There is a significant relationship between variables
B. There is no relationship or difference between variables
C. The alternative hypothesis is true
D. The study will produce positive results
CORRECT ANSWER: B. There is no relationship or difference between variables
Rationale: The null hypothesis (H₀) posits no association or difference, serving as
the default assumption to be tested. Rejecting it suggests support for the
alternative hypothesis.
Question 7: Which type of research explores lived experiences and meanings
from participants' perspectives?
A. Quantitative research
B. Qualitative research
C. Experimental research
D. Quasi-experimental research
CORRECT ANSWER: B. Qualitative research
Rationale: Qualitative research focuses on understanding phenomena through
rich, narrative data such as interviews and focus groups, emphasizing participants'
subjective experiences. Quantitative designs use numerical data.
Question 8: What is the main purpose of a literature review in the research
process?
A. To pad the reference list
B. To identify gaps, synthesize existing knowledge, and refine the research
question
C. To replace the need for data collection
D. To prove the researcher's opinion is correct
CORRECT ANSWER: B. To identify gaps, synthesize existing knowledge, and
refine the research question
, Rationale: A literature review critically appraises prior studies to identify what is
known and unknown, helping to justify and refine the research question. It does
not substitute for original data collection.
Question 9: Which of the following is an example of primary data?
A. Census records from a government database
B. Patient interviews conducted by the researcher
C. Previously published meta-analysis results
D. Hospital discharge summaries from last year
CORRECT ANSWER: B. Patient interviews conducted by the researcher
Rationale: Primary data are collected firsthand by the researcher specifically for
the current study. Secondary data include existing records, databases, and
published reports.
Question 10: A randomized controlled trial (RCT) is characterized by:
A. Random assignment of participants to intervention or control groups
B. Use of only qualitative methods
C. Retrospective data collection
D. Absence of a control group
CORRECT ANSWER: A. Random assignment of participants to intervention or
control groups
Rationale: Randomization is the defining feature of an RCT, minimizing selection
bias and balancing known and unknown confounders between groups. The other
options describe different designs or omissions.
Question 11: What does "blinding" in a clinical trial aim to prevent?
A. Loss to follow-up
B. Selection bias
C. Observer and measurement bias
D. Randomization failure
CORRECT ANSWER: C. Observer and measurement bias
Methods Study Guide, Research Methodology Exam Prep, Quantitative &
Qualitative Research, Evidence-Based Practice, Research Design, Data
Collection, Sampling, Ethics, Data Analysis, Practice Questions, Answers &
Rationales
Question 1: Which of the following best defines the primary purpose of health
research methods?
A. To provide anecdotal evidence for clinical practice
B. To systematically generate new knowledge and answer health-related
questions
C. To replace clinical judgment with statistical models
D. To promote pharmaceutical products through clinical trials
CORRECT ANSWER: B. To systematically generate new knowledge and answer
health-related questions
Rationale: Health research methods are the systematic, disciplined approaches
used to design studies, collect data, analyze results, and draw valid conclusions
that advance medical and public health knowledge. Anecdotal evidence and
product promotion are not the goals of rigorous research.
Question 2: A researcher aims to describe the prevalence of hypertension in a
rural community. Which study design is most appropriate?
A. Randomized controlled trial
B. Case-control study
C. Cross-sectional survey
D. Double-blind experimental study
CORRECT ANSWER: C. Cross-sectional survey
Rationale: A cross-sectional survey measures exposure and outcome
simultaneously in a defined population at one point in time, making it ideal for
estimating prevalence. RCTs and case-control designs are used for other purposes
such as testing interventions or examining rare outcomes.
Question 3: In the research process, what is the correct sequence of the
following steps?
,A. Data collection, hypothesis formulation, analysis, publication
B. Hypothesis formulation, data collection, analysis, interpretation
C. Analysis, hypothesis formulation, data collection, publication
D. Publication, data collection, hypothesis formulation, analysis
CORRECT ANSWER: B. Hypothesis formulation, data collection, analysis,
interpretation
Rationale: Research logically begins with identifying a problem and formulating a
hypothesis, followed by data collection, statistical analysis, and interpretation of
findings. The other sequences violate the logical progression of scientific inquiry.
Question 4: Which of the following is a key characteristic of a good research
question?
A. It is broad and addresses multiple unrelated concepts
B. It is answerable within a reasonable timeframe and resources
C. It guarantees a statistically significant result
D. It requires no prior literature review
CORRECT ANSWER: B. It is answerable within a reasonable timeframe and
resources
Rationale: A well-crafted research question must be feasible, specific, and
answerable given available time, resources, and ethical constraints. Broad or
guaranteed-outcome questions are inappropriate for rigorous research.
Question 5: The FINER criteria for evaluating research questions include all of
the following EXCEPT:
A. Feasible
B. Interesting
C. Novel
D. Expensive
CORRECT ANSWER: D. Expensive
Rationale: FINER stands for Feasible, Interesting, Novel, Ethical, and Relevant.
Cost is a consideration within feasibility, but "Expensive" is not a criterion; in fact,
cost-effectiveness is preferred.
,Question 6: A null hypothesis in health research typically states that:
A. There is a significant relationship between variables
B. There is no relationship or difference between variables
C. The alternative hypothesis is true
D. The study will produce positive results
CORRECT ANSWER: B. There is no relationship or difference between variables
Rationale: The null hypothesis (H₀) posits no association or difference, serving as
the default assumption to be tested. Rejecting it suggests support for the
alternative hypothesis.
Question 7: Which type of research explores lived experiences and meanings
from participants' perspectives?
A. Quantitative research
B. Qualitative research
C. Experimental research
D. Quasi-experimental research
CORRECT ANSWER: B. Qualitative research
Rationale: Qualitative research focuses on understanding phenomena through
rich, narrative data such as interviews and focus groups, emphasizing participants'
subjective experiences. Quantitative designs use numerical data.
Question 8: What is the main purpose of a literature review in the research
process?
A. To pad the reference list
B. To identify gaps, synthesize existing knowledge, and refine the research
question
C. To replace the need for data collection
D. To prove the researcher's opinion is correct
CORRECT ANSWER: B. To identify gaps, synthesize existing knowledge, and
refine the research question
, Rationale: A literature review critically appraises prior studies to identify what is
known and unknown, helping to justify and refine the research question. It does
not substitute for original data collection.
Question 9: Which of the following is an example of primary data?
A. Census records from a government database
B. Patient interviews conducted by the researcher
C. Previously published meta-analysis results
D. Hospital discharge summaries from last year
CORRECT ANSWER: B. Patient interviews conducted by the researcher
Rationale: Primary data are collected firsthand by the researcher specifically for
the current study. Secondary data include existing records, databases, and
published reports.
Question 10: A randomized controlled trial (RCT) is characterized by:
A. Random assignment of participants to intervention or control groups
B. Use of only qualitative methods
C. Retrospective data collection
D. Absence of a control group
CORRECT ANSWER: A. Random assignment of participants to intervention or
control groups
Rationale: Randomization is the defining feature of an RCT, minimizing selection
bias and balancing known and unknown confounders between groups. The other
options describe different designs or omissions.
Question 11: What does "blinding" in a clinical trial aim to prevent?
A. Loss to follow-up
B. Selection bias
C. Observer and measurement bias
D. Randomization failure
CORRECT ANSWER: C. Observer and measurement bias
