IBCLC IBCLC - Certification Research and Evidence-Based Practice

Question 1

What study design is considered the gold standard for evaluating the effectiveness of a breastfeeding intervention?

Accepted Answer

Randomized controlled trial

Answer

Case-control study

Answer

Cross-sectional study

Answer

Case series

Question 2

In evidence-based practice, a systematic review of randomized controlled trials represents which level of evidence?

Accepted Answer

Level I

Answer

Level IV

Answer

Level III

Answer

Level II

Question 3

What does NNT (number needed to treat) represent in clinical research?

Accepted Answer

The number of patients who must receive treatment for one to benefit

Answer

The number of patients who experience adverse effects

Answer

The number of trials needed to confirm a finding

Answer

The number of nurses needed per treatment session

Question 4

Which statistical measure indicates the strength and direction of a relationship between two variables?

Accepted Answer

Correlation coefficient

Answer

p-value

Answer

Confidence interval

Answer

Odds ratio

Question 5

Which bias occurs when study participants alter their behavior because they know they are being observed?

Accepted Answer

Hawthorne effect

Answer

Selection bias

Answer

Recall bias

Answer

Attrition bias

Question 6

What is the IBCLC's primary obligation when applying research findings to clinical practice?

Accepted Answer

Integrate best evidence with clinical expertise and client values

Answer

Follow only the most recent studies regardless of quality

Answer

Apply only findings from US-based studies

Answer

Use evidence only when it confirms established protocols