Preventive Medicine Flashcards
7 cards from real SPEX practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Preventive Medicine flashcards as text
Which study design is most appropriate for estimating the prevalence of hypertension in a US county?
Answer: Cross-sectional survey
Cross-sectional surveys measure disease prevalence at a single point in time within a defined population.
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?
Answer: 2%
Vaccine efficacy of 80% means the attack rate is reduced by 80%, so 10% × (1−0.80) = 2%.
Which measure best quantifies the public health impact of eliminating a risk factor from a population?
Answer: Population attributable risk percent
Population attributable risk percent estimates the proportion of disease in the total population attributable to a given exposure.
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:
Answer: Days away from work, restricted duty, or medical treatment beyond first aid
OSHA recordable illnesses include those requiring days away, job transfer/restriction, or medical treatment beyond first aid.
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.
Answer: 20
USPSTF recommends annual LDCT for adults 50–80 with ≥20 pack-year history who currently smoke or quit within 15 years.
In outbreak investigation, the epidemic curve for a point-source exposure typically shows:
Answer: A sharp peak within one incubation period followed by rapid decline
A point-source outbreak exposes all cases simultaneously, producing a sharp rise and fall within a single incubation period.
Which intervention is classified as tertiary prevention?
Answer: Cardiac rehabilitation after myocardial infarction
Tertiary prevention reduces the impact of established disease by restoring function and preventing complications, as cardiac rehab does post-MI.