SPEX Preventive Medicine 2

Question 1

Which study design is most appropriate for estimating the prevalence of hypertension in a US county?

Accepted Answer

Cross-sectional survey

Answer

Cross-sectional surveys measure disease prevalence at a single point in time within a defined population.

Question 2

A vaccine with 80% efficacy is administered to a population where the attack rate without vaccination is 10%. What is the attack rate in vaccinated individuals?

Accepted Answer

2%

Answer

Vaccine efficacy of 80% means the attack rate is reduced by 80%, so 10% × (1−0.80) = 2%.

Question 3

Which measure best quantifies the public health impact of eliminating a risk factor from a population?

Accepted Answer

Population attributable risk percent

Answer

Population attributable risk percent estimates the proportion of disease in the total population attributable to a given exposure.

Question 4

An employee develops contact dermatitis after working with epoxy resins. Under OSHA regulations, this must be recorded on the OSHA 300 Log if it results in:

Accepted Answer

Days away from work, restricted duty, or medical treatment beyond first aid

Answer

OSHA recordable illnesses include those requiring days away, job transfer/restriction, or medical treatment beyond first aid.

Question 5

The US Preventive Services Task Force recommends annual low-dose CT screening for lung cancer in adults aged 50–80 who have a ___-pack-year smoking history and currently smoke or quit within the past 15 years.

Accepted Answer

20

Answer

USPSTF recommends annual LDCT for adults 50–80 with ≥20 pack-year history who currently smoke or quit within 15 years.

SPEX Exam Practice Test

SPEX Exam Practice Test

SPEX Preventive Medicine 2