CED Research Methods & Evidence-Based Practice 2

Question 1

In emergency dispatch research, what does a 'cohort study' involve?

Accepted Answer

Following a group of subjects over time to observe outcomes

Answer

A cohort study follows a defined group prospectively over time to observe outcomes related to exposures or interventions.

Question 2

Which statistical measure indicates how much individual data points deviate from the mean in dispatch response time analysis?

Accepted Answer

Standard deviation

Answer

Standard deviation quantifies the spread of data points around the mean, indicating variability in response times.

Question 3

What is 'informed consent' in the context of research involving emergency dispatchers?

Accepted Answer

Participants voluntarily agreeing after being fully informed of risks and benefits

Answer

Informed consent requires participants to voluntarily agree to participate after receiving complete information about the study.

Question 4

A dispatch center wants to evaluate whether a new CPR instruction script improves caller compliance. Which study design is most rigorous?

Accepted Answer

Randomized controlled trial

Answer

A randomized controlled trial minimizes bias by randomly allocating participants to treatment or control groups, providing the strongest causal evidence.

Question 5

What is 'selection bias' in emergency dispatch research?

Accepted Answer

Systematic differences between study groups due to non-random selection

Answer

Selection bias occurs when the method of selecting participants creates systematic differences that distort study results.

(CED) Certified Emergency Dispatcher Practice Test

(CED) Certified Emergency Dispatcher Practice Test

CED Research Methods & Evidence-Based Practice 2