NRSG 5220-INTRODUCTION TO RESEARCH METHODS AND
APPLICATION FOR HEALTHCARE EXAM] BRAND NEW
VERSION!!–COMPLETE STUDY GUIDE | PRACTICE QUESTIONS
AND ANSWERS-RATIONALES | EXAM PREP | DOWNLOAD
INSTANT PDF | GUARANTEED PASS || LATEST EXAM 2026-
2027
1. A nurse researcher is designing a qualitative study to explore the lived experiences of
patients navigating long-term recovery following a traumatic brain injury. Which
philosophical paradigm best aligns with this research inquiry?
A. Positivism
B. Constructivism
C. Reductionism
D. Post-positivism
Answer: B
Constructivism posits that reality is socially constructed and subjective, making it the ideal
paradigm for exploring human experiences and individual perceptions in qualitative research.
2. A clinical nurse specialist is evaluating a randomized controlled trial that investigates the
efficacy of a new wound-care protocol. The study reports a p-value of 0.03 for the primary
healing rate endpoint, with an alpha level set at 0.05. What is the appropriate
interpretation of these findings?
A. The null hypothesis should be accepted because the p-value is too close to zero
B. The finding is statistically significant, allowing the researcher to reject the null hypothesis
and conclude that the protocol likely had a real effect
C. The study is clinically irrelevant because p-values do not measure sample size adequacy
D. The alternative hypothesis must be rejected due to a high risk of a Type II error
Answer: B
A p-value less than the predetermined alpha level of 0.05 indicates that the observed data are
statistically significant, meaning the null hypothesis is rejected in favor of the alternative.
,3. A nurse manager wants to determine if there is a linear relationship between nurse
burnout scores and patient-fall rates across ten hospital units. Which statistical test is most
appropriate for analyzing these two continuous variables?
A. Independent samples t-test
B. Chi-square test of independence
C. Pearson correlation coefficient
D. One-way analysis of variance (ANOVA)
Answer: C
The Pearson correlation coefficient measures the strength and direction of the linear
relationship between two continuous variables, such as burnout scores and fall rates.
4. A nurse researcher is reviewing a research report and notes that the authors utilized a
double-blind design for a pharmacological trial. What is the primary purpose of blinding
in experimental health research?
A. To guarantee that the sample size is large enough to achieve adequate statistical power
B. To eliminate performance and detection bias by ensuring participants and investigators
remain unaware of treatment group allocations
C. To bypass the requirement for institutional review board approval
D. To eliminate all possible sources of confounding variables entirely from the environment
Answer: B
Double-blinding prevents participants, care providers, and outcome assessors from knowing
group assignments, which protects against subjective bias in treatment delivery and data
collection.
5. An institutional review board (IRB) is reviewing a proposed clinical study involving
vulnerable populations, specifically institutionalized adults with cognitive impairments.
Which ethical principle is primarily addressed by requiring surrogate consent and special
protections for this group?
A. Beneficence
B. Justice
C. Respect for persons (Autonomy)
,D. Veracity
Answer: C
Respect for persons recognizes individuals as autonomous agents and mandates additional
safeguards, such as surrogate consent, to protect those with diminished autonomy from
coercion or exploitation.
6. A nurse researcher utilizes a convenience sampling method to recruit participants for a
survey on shift-work fatigue. What is the primary methodological limitation of using a
convenience sample?
A. It requires excessive financial resources and prolonged recruitment timelines
B. It increases sampling bias and limits the generalizability of findings to the broader target
population
C. It completely eliminates the ability to calculate descriptive statistics
D. It makes blinding of the study participants impossible to achieve
Answer: B
Convenience samples rely on readily available participants, which introduces selection bias
and reduces external validity, making it difficult to generalize results to the wider population.
7. A doctoral-prepared nurse is examining the psychometric properties of a newly
developed instrument measuring nursing leadership competence. The nurse administers
the tool twice to the same group of participants over a two-week interval. Which reliability
coefficient is being evaluated?
A. Internal consistency reliability using Cronbach's alpha
B. Inter-rater reliability
C. Test-retest reliability
D. Split-half reliability
Answer: C
Test-retest reliability assesses the stability of an instrument over time by administering the
exact same test to the same participants on separate occasions.
, 8. A quality improvement team is designing a study to evaluate whether a new nurse-led
discharge checklist reduces 30-day heart failure readmissions. The study design involves
collecting data from one unit before implementing the checklist and from the same unit
after implementation, without a randomized control group. What type of quantitative
design is this?
A. True experimental randomized controlled trial
B. Quasi-experimental single-group pretest-posttest design
C. Non-experimental cross-sectional survey design
D. Descriptive phenomenological design
Answer: B
A quasi-experimental pretest-posttest design evaluates the impact of an intervention when
random assignment or a true control group is not feasible or ethical.
9. A nurse researcher is calculating the required sample size for an upcoming clinical trial
using power analysis. If the researcher sets the statistical power at 0.80, what does this
value represent?
A. The probability of committing a Type I error (false positive)
B. The probability of correctly rejecting the null hypothesis when a true effect exists (avoiding a
Type II error)
C. The proportion of participants expected to drop out before study completion
D. The exact correlation coefficient expected between the independent and dependent variables
Answer: B
Statistical power (typically set at 0.80 or 80%) represents the study's ability to detect a true
clinical effect or relationship if one genuinely exists, minimizing false negatives.
10. A nurse manager reads a systematic review that synthesizes qualitative studies on
patient coping mechanisms during intensive care unit admissions. Which analytical
approach is typically used to synthesize qualitative research findings across multiple
studies?
A. Meta-analysis
B. Meta-synthesis
APPLICATION FOR HEALTHCARE EXAM] BRAND NEW
VERSION!!–COMPLETE STUDY GUIDE | PRACTICE QUESTIONS
AND ANSWERS-RATIONALES | EXAM PREP | DOWNLOAD
INSTANT PDF | GUARANTEED PASS || LATEST EXAM 2026-
2027
1. A nurse researcher is designing a qualitative study to explore the lived experiences of
patients navigating long-term recovery following a traumatic brain injury. Which
philosophical paradigm best aligns with this research inquiry?
A. Positivism
B. Constructivism
C. Reductionism
D. Post-positivism
Answer: B
Constructivism posits that reality is socially constructed and subjective, making it the ideal
paradigm for exploring human experiences and individual perceptions in qualitative research.
2. A clinical nurse specialist is evaluating a randomized controlled trial that investigates the
efficacy of a new wound-care protocol. The study reports a p-value of 0.03 for the primary
healing rate endpoint, with an alpha level set at 0.05. What is the appropriate
interpretation of these findings?
A. The null hypothesis should be accepted because the p-value is too close to zero
B. The finding is statistically significant, allowing the researcher to reject the null hypothesis
and conclude that the protocol likely had a real effect
C. The study is clinically irrelevant because p-values do not measure sample size adequacy
D. The alternative hypothesis must be rejected due to a high risk of a Type II error
Answer: B
A p-value less than the predetermined alpha level of 0.05 indicates that the observed data are
statistically significant, meaning the null hypothesis is rejected in favor of the alternative.
,3. A nurse manager wants to determine if there is a linear relationship between nurse
burnout scores and patient-fall rates across ten hospital units. Which statistical test is most
appropriate for analyzing these two continuous variables?
A. Independent samples t-test
B. Chi-square test of independence
C. Pearson correlation coefficient
D. One-way analysis of variance (ANOVA)
Answer: C
The Pearson correlation coefficient measures the strength and direction of the linear
relationship between two continuous variables, such as burnout scores and fall rates.
4. A nurse researcher is reviewing a research report and notes that the authors utilized a
double-blind design for a pharmacological trial. What is the primary purpose of blinding
in experimental health research?
A. To guarantee that the sample size is large enough to achieve adequate statistical power
B. To eliminate performance and detection bias by ensuring participants and investigators
remain unaware of treatment group allocations
C. To bypass the requirement for institutional review board approval
D. To eliminate all possible sources of confounding variables entirely from the environment
Answer: B
Double-blinding prevents participants, care providers, and outcome assessors from knowing
group assignments, which protects against subjective bias in treatment delivery and data
collection.
5. An institutional review board (IRB) is reviewing a proposed clinical study involving
vulnerable populations, specifically institutionalized adults with cognitive impairments.
Which ethical principle is primarily addressed by requiring surrogate consent and special
protections for this group?
A. Beneficence
B. Justice
C. Respect for persons (Autonomy)
,D. Veracity
Answer: C
Respect for persons recognizes individuals as autonomous agents and mandates additional
safeguards, such as surrogate consent, to protect those with diminished autonomy from
coercion or exploitation.
6. A nurse researcher utilizes a convenience sampling method to recruit participants for a
survey on shift-work fatigue. What is the primary methodological limitation of using a
convenience sample?
A. It requires excessive financial resources and prolonged recruitment timelines
B. It increases sampling bias and limits the generalizability of findings to the broader target
population
C. It completely eliminates the ability to calculate descriptive statistics
D. It makes blinding of the study participants impossible to achieve
Answer: B
Convenience samples rely on readily available participants, which introduces selection bias
and reduces external validity, making it difficult to generalize results to the wider population.
7. A doctoral-prepared nurse is examining the psychometric properties of a newly
developed instrument measuring nursing leadership competence. The nurse administers
the tool twice to the same group of participants over a two-week interval. Which reliability
coefficient is being evaluated?
A. Internal consistency reliability using Cronbach's alpha
B. Inter-rater reliability
C. Test-retest reliability
D. Split-half reliability
Answer: C
Test-retest reliability assesses the stability of an instrument over time by administering the
exact same test to the same participants on separate occasions.
, 8. A quality improvement team is designing a study to evaluate whether a new nurse-led
discharge checklist reduces 30-day heart failure readmissions. The study design involves
collecting data from one unit before implementing the checklist and from the same unit
after implementation, without a randomized control group. What type of quantitative
design is this?
A. True experimental randomized controlled trial
B. Quasi-experimental single-group pretest-posttest design
C. Non-experimental cross-sectional survey design
D. Descriptive phenomenological design
Answer: B
A quasi-experimental pretest-posttest design evaluates the impact of an intervention when
random assignment or a true control group is not feasible or ethical.
9. A nurse researcher is calculating the required sample size for an upcoming clinical trial
using power analysis. If the researcher sets the statistical power at 0.80, what does this
value represent?
A. The probability of committing a Type I error (false positive)
B. The probability of correctly rejecting the null hypothesis when a true effect exists (avoiding a
Type II error)
C. The proportion of participants expected to drop out before study completion
D. The exact correlation coefficient expected between the independent and dependent variables
Answer: B
Statistical power (typically set at 0.80 or 80%) represents the study's ability to detect a true
clinical effect or relationship if one genuinely exists, minimizing false negatives.
10. A nurse manager reads a systematic review that synthesizes qualitative studies on
patient coping mechanisms during intensive care unit admissions. Which analytical
approach is typically used to synthesize qualitative research findings across multiple
studies?
A. Meta-analysis
B. Meta-synthesis
