Table 5 Comparison of the two methods in recognizing problems according to usability attributes
Usability methods | HE N (%) | CW N (%) | Chi-square tests | Only HE N (%) | Only CW N (%) | Both HE and CW N (%) |
|---|---|---|---|---|---|---|
Usability attributes | Â | Â | Â | Â | Â | Â |
Efficiency | 13 (12.5) | 6 (25) | 0.0108 | 12 (12.5) | 5 (31.2) | 1 (12.5) |
Effectiveness | 35 (33.7) | 2 (8.3) |  < 0.001 | 34 (35.4) | 1 (6.2) | 1 (12.5) |
Satisfaction | 22 (21.2) | 2 (8.3) |  < 0.001 | 22 (23) | 2 (12.5) | 0 (0) |
Learnability | 18 (17.3) | 8 (33.3) | 0.05 | 15 (15.6) | 5 (31.2) | 3 (37.5) |
Memorability | 5 (4.8) | 4 (16.7) | 0.739 | 3 (3.1) | 2 (12.5) | 2 (25) |
Errors | 11 (10.6) | 2 (8.3) | 0.013 | 10 (10.4) | 1 (6.2) | 1 (12.5) |
Total | 104 (100) | 24 (100) |  < 0.001 |  |  |  |
Percentage of the problems recognized by the two methods to the total number of problems | Â | Â | Â | 96 (80) | 16 (13.3) | 8 (6.7) |