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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
  1. 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.

  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?

    Answer: 2%

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

  3. 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.

  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:

    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.

  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.

    Answer: 20

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

  6. 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.

  7. 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.