IBCLC IBCLC - Certification Research and Evidence-Based Practice 2 — Questions and Answers
Question 1: Which type of study examines the prevalence of breastfeeding at a single point in time?
- Cohort study
- Case-control study
- Cross-sectional study (Correct answer)
- Experimental study
Correct answer: Cross-sectional study
Cross-sectional studies collect data at one specific point in time, providing a snapshot of prevalence or characteristics in a population.
Question 2: A p-value of 0.03 in a breastfeeding study indicates:
- There is a 3% chance the results are clinically significant
- There is a 3% chance of observing the results if the null hypothesis is true (Correct answer)
- The study has a 97% confidence level
- The intervention is 97% effective
Correct answer: There is a 3% chance of observing the results if the null hypothesis is true
A p-value represents the probability of obtaining results as extreme as observed, assuming the null hypothesis is true.
Question 3: Which research methodology is best suited to explore the lived experience of breastfeeding challenges among first-time mothers?
- Randomized controlled trial
- Meta-analysis
- Qualitative phenomenological study (Correct answer)
- Case-control study
Correct answer: Qualitative phenomenological study
Phenomenological qualitative research explores the lived experiences and meanings that individuals assign to their personal experiences.
Question 4: What is the purpose of a confidence interval in research reporting?
- To establish the level of statistical significance
- To indicate the range within which the true population value likely falls (Correct answer)
- To confirm that a study was conducted ethically
- To measure the size of the study sample
Correct answer: To indicate the range within which the true population value likely falls
A confidence interval provides a range of plausible values for the true population parameter, typically calculated at the 95% confidence level.
Question 5: The ILCA Global Standards of Practice are best used by the IBCLC to:
- Determine insurance billing codes
- Guide clinical decision-making and ensure consistent, evidence-based care (Correct answer)
- Replace the IBLCE Code of Professional Conduct
- Establish minimum educational requirements for IBCLCs
Correct answer: Guide clinical decision-making and ensure consistent, evidence-based care
The ILCA Global Standards of Practice provide a framework for evidence-based, client-centered lactation care across all clinical settings.
Question 6: Which term describes the ability of a screening tool to correctly identify infants who do have a feeding problem?
- Specificity
- Positive predictive value
- Sensitivity (Correct answer)
- Negative predictive value
Correct answer: Sensitivity
Sensitivity is the proportion of true positives correctly identified by a test, reflecting its ability to detect those who actually have the condition.
IBCLC IBCLC - Certification Research and Evidence-Based Practice 2
Which type of study examines the prevalence of breastfeeding at a single point in time?