Epidemiology: practice question

A PSM question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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PSM · Epidemiology

Sample item

Existing cases at a point measure what?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. Prevalence

This item reviews Epidemiology; Prevalence is the best answer because it directly fits the forensic or public-health principle described.

Option by option

  • A. Sensitivity

    Sensitivity is plausible but not the single best answer.

  • B. Incidence

    Incidence does not match the stated scenario.

  • C. Prevalence (correct)

    Correct. Prevalence is supported by the defining principle.

  • D. NNT

    NNT is not supported by the key finding.

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.

More PSM questions

Questions about this PSM question

What is the answer to this PSM question?

The best answer is C, Prevalence. This item reviews Epidemiology; Prevalence is the best answer because it directly fits the forensic or public-health principle described.

Why is "Sensitivity" not the answer?

Sensitivity is plausible but not the single best answer.

Why is "Incidence" not the answer?

Incidence does not match the stated scenario.

Why is "NNT" not the answer?

NNT is not supported by the key finding.

What concept does this question test?

It tests Epidemiology in PSM. The correct option holds because: Correct. Prevalence is supported by the defining principle.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Epidemiology?

Practise biostatistics with small calculations until sensitivity, predictive values and risk measures are automatic. Then use the flashcards and the other PSM questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.