Table 5.
Prior health knowledge measurements by cluster groups according to usability metrics for the blood pressure monitor using the Kruskal-Wallis test (N=137).
| Measurement | Low group (N=26; overall mean 8.73/40, SD 2.51) | Medium group (N=66; overall mean 14.47/40, SD 1.72) | High group (N=45; overall mean 20.93/40, SD 2.9) | Kruskal-Wallis test | ||||
| Mean (SD) | Range | Mean (SD) | Range | Mean (SD) | Range | χ2 (2,136) | P | |
| Effectiveness (errors) | 92.00 (1.44) | 0-7 | 0.86 (1.62) | 0-8 | 0.56 (1.01) | 0-4 | 2.5 | .29 |
| Efficiency (seconds) | 286.42 (110.16) | 112.1-534.3 | 257.53 (119.41) | 90.5-681.04 | 251.14 (83.72) | 127.5-494.2 | 2.9 | .23 |
| Satisfaction (SUS score) | 70.38 (16.46) | 27.5-100 | 72.39 (16.46) | 27.5-97.5 | 73.82 (16.44) | 40-100 | 1.0 | .60 |
| Health data read | 0.00 (0.00) | 0-0 | 0.05 (0.21) | 0-1 | 0.20 (0.41) | 0-1 | 3.5 | .18 |