Study design: 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 · Study design

Sample item

What is blinding used for in research?

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

The answer and the reasoning

B. Reduce measurement or observer bias

The defining Study design principle supports Reduce measurement or observer bias; it directly accounts for the forensic observation, evidence requirement, or public-health measure in the question.

Option by option

  • A. Increase sample loss

    Increase sample loss does not establish the requested study design conclusion.

  • B. Reduce measurement or observer bias (correct)

    Correct. Reduce measurement or observer bias best fits the important clue in this sample.

  • C. Eliminate random error completely

    Eliminate random error completely may be useful elsewhere but is not the best answer here.

  • D. Replace randomization

    Replace randomization is not consistent with the finding or appropriate action described.

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 B, Reduce measurement or observer bias. The defining Study design principle supports Reduce measurement or observer bias; it directly accounts for the forensic observation, evidence requirement, or public-health measure in the question.

Why is "Increase sample loss" not the answer?

Increase sample loss does not establish the requested study design conclusion.

Why is "Eliminate random error completely" not the answer?

Eliminate random error completely may be useful elsewhere but is not the best answer here.

Why is "Replace randomization" not the answer?

Replace randomization is not consistent with the finding or appropriate action described.

What concept does this question test?

It tests Study design in PSM. The correct option holds because: Correct. Reduce measurement or observer bias 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 Study design?

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.