Injury prevention: Haddon matrix: 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 · Injury prevention: Haddon matrix

Sample item

A district improves the speed of ambulance response and trauma-care availability on a highway to reduce deaths after road crashes. In the Haddon matrix, which phase does this address?

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

The answer and the reasoning

C. Post-crash phase

The Haddon matrix crosses the phases pre-crash, crash and post-crash with host, agent or vehicle, and environmental factors. Emergency response, first aid and trauma care act after the event to reduce the severity of outcome. Speed limits and driver education act before the crash.

Option by option

  • A. Primordial phase

    Primordial phase is a term from levels of prevention and is not a phase of the matrix.

  • B. Pre-crash phase

    The pre-crash phase concerns prevention of the crash, such as speed control and driver training.

  • C. Post-crash phase (correct)

    Correct. Rapid transport and trauma care reduce deaths after the crash has occurred.

  • D. Crash phase

    The crash phase concerns reducing injury during impact, such as seat belts and crash helmets.

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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Questions about this PSM question

What is the answer to this PSM question?

The best answer is C, Post-crash phase. The Haddon matrix crosses the phases pre-crash, crash and post-crash with host, agent or vehicle, and environmental factors.

Why is "Primordial phase" not the answer?

Primordial phase is a term from levels of prevention and is not a phase of the matrix.

Why is "Pre-crash phase" not the answer?

The pre-crash phase concerns prevention of the crash, such as speed control and driver training.

Why is "Crash phase" not the answer?

The crash phase concerns reducing injury during impact, such as seat belts and crash helmets.

What concept does this question test?

It tests Injury prevention: Haddon matrix in PSM. Emergency response, first aid and trauma care act after the event to reduce the severity of outcome. Speed limits and driver education act before the crash.

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 Injury prevention: Haddon matrix?

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.