#1
Which of the following is a key component of research design in healthcare?
Statistical analysis
Literature review
Data collection
Data interpretation
#2
Which of the following is a primary goal of sampling in healthcare research?
To increase statistical power
To minimize selection bias
To eliminate confounding variables
To ensure external validity
#3
What is the purpose of a control group in a randomized controlled trial (RCT) in healthcare research?
To receive the experimental intervention
To provide a baseline for comparison
To ensure participant blinding
To conduct the pilot study
#4
What is the significance of a double-blind study design in healthcare research?
To control for participant expectations
To eliminate the placebo effect
To prevent bias in both participants and researchers
To ensure external validity
#5
What is the primary purpose of triangulation in healthcare research?
To enhance the credibility of study findings
To manipulate independent variables
To conduct a meta-analysis
To calculate effect sizes
#6
What is the purpose of a pilot study in healthcare research?
To test the feasibility of the study
To conduct the main study
To analyze final results
To ensure participant blinding
#7
Which of the following is a qualitative research method commonly used in healthcare studies?
Randomized controlled trial (RCT)
Case-control study
Phenomenological study
Cohort study
#8
What is the difference between cross-sectional and longitudinal study designs in healthcare research?
Cross-sectional studies involve repeated measurements over time, while longitudinal studies capture data at a single point in time.
Cross-sectional studies capture data at a single point in time, while longitudinal studies involve repeated measurements over time.
Cross-sectional studies focus on experimental interventions, while longitudinal studies focus on observational data.
Cross-sectional studies are used for clinical trials, while longitudinal studies are used for epidemiological research.
#9
Which of the following is a common limitation associated with retrospective study designs in healthcare research?
Recall bias
Prospective bias
Observer bias
Sampling bias
#10
What is the term for the phenomenon where participants alter their behavior due to awareness of being observed, affecting the study's results?
Selection bias
Hawthorne effect
Confounding variable
Placebo effect
#11
What is the term for a type of sampling method where every member of the population has an equal chance of being selected?
Stratified sampling
Convenience sampling
Random sampling
Snowball sampling
#12
In healthcare research, what does the acronym IRB stand for?
Institutional Review Board
Informed Research Bureau
Internal Review Body
Investigation Review Bureau
#13
What is the purpose of randomization in experimental study designs?
To ensure blinding of participants
To minimize selection bias
To eliminate confounding variables
To control for external validity
#14
In healthcare research, what does the term 'power' refer to?
The probability of rejecting a false null hypothesis
The likelihood of finding a significant result
The accuracy of data collection instruments
The precision of statistical estimates
#15
What is the primary purpose of a systematic review in healthcare research?
To test a specific hypothesis
To explore new research questions
To summarize and synthesize existing evidence
To conduct a large-scale experimental study