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PSM · Outbreaks
Sample itemProportion ill among exposed people is what?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Attack rate
This item reviews Outbreaks; Attack rate is the best answer because it directly fits the forensic or public-health principle described.
Option by option
A. Specificity
Specificity is not supported by the key finding.
B. Attack rate (correct)
Correct. Attack rate is supported by the defining principle.
C. Odds ratio
Odds ratio is plausible but not the single best answer.
D. Incidence density
Incidence density does not match the stated scenario.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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