Research Article
An Iterative, Mixed Usability Approach Applied to the Telekit System from the Danish TeleCare North Trial
Table 2
Rolf Molich’s severity rating scale.
| Five-point severity rating scale | Description of severity ratings |
| (0) Improvement | Which does not substantially disturb the user’s experience | (1) Minor problem | The user will be somewhat delayed (few minutes) | (2) Severe problem | The user will be much delayed (several minutes) | (3) Critical problem | The user cannot carry out the task | (4) Malfunction problem | The system does not work properly |
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