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

What is incidence density expressed using?

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

The answer and the reasoning

D. Person-time at risk

The defining Epidemiology principle supports Person-time at risk; it directly accounts for the forensic observation, evidence requirement, or public-health measure in the question.

Option by option

  • A. Hospital beds

    Hospital beds is not consistent with the finding or appropriate action described.

  • B. Existing cases only

    Existing cases only does not establish the requested epidemiology conclusion.

  • C. Total births only

    Total births only may be useful elsewhere but is not the best answer here.

  • D. Person-time at risk (correct)

    Correct. Person-time at risk best fits the important clue in this sample.

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 D, Person-time at risk. The defining Epidemiology principle supports Person-time at risk; it directly accounts for the forensic observation, evidence requirement, or public-health measure in the question.

Why is "Hospital beds" not the answer?

Hospital beds is not consistent with the finding or appropriate action described.

Why is "Existing cases only" not the answer?

Existing cases only does not establish the requested epidemiology conclusion.

Why is "Total births only" not the answer?

Total births only may be useful elsewhere but is not the best answer here.

What concept does this question test?

It tests Epidemiology in PSM. The correct option holds because: Correct. Person-time at risk best fits the important clue in this sample.

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.