CPO Research Methods & Evidence-Based Practice 3

Question 1

A researcher reports a 'p-value of 0.03' for a new UV disinfection study. What does this indicate?

Accepted Answer

There is a 3% probability the results occurred by chance

Answer

A p-value of 0.03 means there is only a 3% probability that the observed difference between groups occurred by random chance, supporting the study's conclusion.

Question 2

When applying evidence-based practice to pool operations, the CPO should FIRST:

Accepted Answer

Identify the specific operational question or problem

Answer

Evidence-based practice begins with clearly defining the clinical or operational question before searching for and evaluating relevant evidence.

Question 3

A meta-analysis on chloramine formation combines data from 15 different pool studies. What is the key advantage of this research method?

Accepted Answer

It provides greater statistical power by pooling large datasets

Answer

Meta-analysis pools data from multiple studies, dramatically increasing sample size and statistical power, which produces more precise and reliable estimates of treatment effects.

Question 4

Which research design would BEST determine whether a rise in recreational water illnesses (RWIs) at a facility correlates with bather load?

Accepted Answer

Prospective cohort study tracking illness rates and attendance

Answer

A prospective cohort study follows groups over time and can identify associations between bather load (exposure) and illness rates (outcome).

Question 5

A CPO finds two conflicting studies about optimal pH range for chlorine effectiveness. The BEST next step is to:

Accepted Answer

Review both studies' methodology and look for systematic reviews

Answer

Evaluating methodology quality and seeking systematic reviews that synthesize multiple studies provides the highest-quality evidence to resolve conflicting findings.

(CPO) Certified Pool and Spa Operator Practice Test

(CPO) Certified Pool and Spa Operator Practice Test

CPO Research Methods & Evidence-Based Practice 3