CHC Evidence-Based Practice & Research Methods 4

Question 1

A CHC team is evaluating flooring material options to reduce patient fall rates. Which type of evidence would rank HIGHEST on the evidence hierarchy for this decision?

Accepted Answer

A systematic review of multiple controlled studies on flooring and fall outcomes

Answer

Systematic reviews of controlled studies sit at the top of the evidence hierarchy, synthesizing the best available research on an intervention's effectiveness.

Question 2

When a healthcare construction standard references 'Level C' evidence, this typically indicates:

Accepted Answer

Evidence derived from expert opinion or consensus in the absence of controlled trials

Answer

Level C evidence reflects expert consensus or opinion, used when controlled studies are lacking or impractical to conduct.

Question 3

A researcher uses a pre/post design to study the effect of a new nurse station layout on medication errors. The primary limitation of this design is:

Accepted Answer

It lacks a concurrent control group, making it difficult to rule out temporal confounders

Answer

Without a concurrent control group, changes over time (e.g., staff training, seasonal variation) may explain the outcome rather than the layout change.

Question 4

In healthcare facility research, 'inter-rater reliability' is most critical when:

Accepted Answer

Multiple observers are independently coding or measuring the same environmental variables

Answer

Inter-rater reliability ensures that different observers produce consistent measurements, which is essential for the validity of observational data in facility research.

Question 5

The 'Hawthorne effect' in healthcare construction research refers to:

Accepted Answer

Changes in participant behavior due to awareness of being observed, potentially confounding results

Answer

The Hawthorne effect occurs when subjects modify their behavior because they know they are being studied, which can bias observational research findings.

(CHC) Certified Health Care Constructor Practice Test

(CHC) Certified Health Care Constructor Practice Test

CHC Evidence-Based Practice & Research Methods 4