BMAT Technology & Digital Applications 5

Question 1

Which principle in user-centered design for health apps states that error messages should offer a constructive path forward rather than just describing the failure?

Accepted Answer

Help users recognize, diagnose, and recover from errors

Answer

Nielsen's heuristic on error recovery requires messages that clearly explain the problem and suggest corrective action, not merely report an error code.

Question 2

Natural Language Processing (NLP) applied to clinical notes most directly enables:

Accepted Answer

Automated extraction of structured diagnoses from free-text records

Answer

NLP algorithms parse unstructured clinical text to identify and extract coded clinical concepts such as diagnoses, medications, and procedures.

Question 3

In a randomized controlled trial evaluating a new digital health intervention, 'blinding' of outcome assessors is important to prevent:

Accepted Answer

Observer bias affecting outcome measurement

Answer

If outcome assessors know which group participants are in, their scoring can be unconsciously influenced, introducing observer bias into results.

Question 4

Which network topology connects every device directly to every other device, providing maximum redundancy but becoming impractical at large scale?

Accepted Answer

Mesh topology

Answer

A full mesh network connects each node to all others, creating n(n-1)/2 links and maximizing fault tolerance but growing combinatorially with node count.

Question 5

A hospital computes the sensitivity of its sepsis alert system and finds it to be 0.65. This means the system:

Accepted Answer

Correctly identifies 65% of patients who actually have sepsis

Answer

Sensitivity of 0.65 means the system detects 65% of true sepsis cases (TP rate), missing 35% of actual sepsis patients (false negatives).

BMAT - Assessment Practice Test

BMAT - Assessment Practice Test

BMAT Technology & Digital Applications 5