Question 1

Which statistical test is MOST appropriate for comparing infection rates before and after an intervention?

Options :

A : Student’s t-test

B : Chi-square test for proportions

C : Linear regression analysis

D : Wilcoxon rank-sum test

Answer: B

Question 2

Which of the following operating suite design features is LEAST important for the prevention of infection?

Options :

A : Type of floor material

B : Positive pressure air handling

C : Placement of sinks for surgical scrubs

D : Control of traffic and traffic flow patterns

Answer: A

Question 3

The Environmental Services department is purchasing a new disinfectant that is an approved hospital disinfectant with no tuberculocidal claim. This product is appropriate for cleaning which of the following items?

Options :

A : Laryngoscope blades

B : Blood pressure cuff

C : Respiratory therapy equipment

D : Ultrasound probe

Answer: B

Question 4

An infection preventionist (IP) is informed of a measles outbreak in a nearby community. What is the IP’s FIRST priority when working with Occupational Health?

Options :

A : Isolate employees who have recently traveled to areas with measles outbreaks.

B : Reassign employees who are pregnant from caring for patients with suspected measles.

C : Verify that employees in high-risk exposure areas of the facility have adequate immunity to measles.

D :

Set up a mandatory vaccination clinic in collaboration with Occupational Health and local public health partners.

Answer: C

Question 5

A city has a population of 150.000. Thirty new cases of tuberculosis (TB) were diagnosed in the city last year. These now cases brought the total number of active TB cases in the city last year to 115. Which of the following equations represents the incidence rate tor TB per 100.000 in that year?

Options :

A : (30 ÷ 150.000) x 100.000 = X

B : (30÷ 150.000) x 100 = X

C : (115 ÷ 150.000) x 100.000 - X

D : (115 ÷ 100.000) x 100 = X

Answer: A