Research Article
Design and Evaluation of Web-Based Dental Implant Registry (DIR) for Better Clinical Outcomes
Table 3
Number of usability problems identified based on Nielsen’s evaluation principles.
| | No. | Principles of evaluation | Number of problems (%) | Severity | Number of problems identified | Severity of problem | | Evaluator 1 | Evaluator 2 | Evaluator 3 | Evaluator 4 | Evaluator 5 |
| | 1 | System clarity | 14 (20) | 1.8 | 4 | 5 | 1 | 3 | 1 | Small | | 2 | Concordance between the system and the real world | 9 (18) | 1.7 | 0 | 7 | 0 | 0 | 2 | Small | | 3 | Freedom of user and control of the system | 4 (20) | 1.95 | 0 | 1 | 1 | 1 | 1 | Small | | 4 | Observance of uniformity and standards | 3 (20) | 1.4 | 0 | 1 | 0 | 1 | 1 | Minor | | 5 | Help diagnose, identify, and correct errors | 6 (12) | 2.3 | 0 | 3 | 1 | 0 | 2 | Small | | 6 | Error prevention | 5 (10) | 3.04 | 0 | 3 | 1 | 0 | 1 | Big | | 7 | Recognition instead of reminders | 1 (20) | 1.8 | 0 | 1 | 0 | 0 | 0 | Small | | 8 | Flexibility and efficiency of use | 1 (20) | 2 | 0 | 1 | 0 | 0 | 0 | Small | | 9 | Aesthetic aspects and simple design | 5 (10) | 1.4 | 0 | 1 | 3 | 0 | 1 | Minor | | 10 | Guidance and documentation | 2 (4) | 2.4 | 0 | 1 | 0 | 0 | 1 | Small | | Total | 50 (100) | 1.8 | 4 | 24 | 7 | 5 | 10 | Small |
|
|
