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Table 3 Problem categories according to their average severity [41]

From: Comparison of usability evaluation methods for a health information system: heuristic evaluation versus cognitive walkthrough method

Problem category

Average severity

No problem

0–0.5

Cosmetic

0.6–1.5

Minor

1.6–2.5

Major

2.6–3.5

Catastrophic

3.6–4

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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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