Usability characteristic | Mean score (SD) | Range of scores | Response scale |
---|---|---|---|
Ease of completion | 3.93 (0.27) | 3–4 | 1 = very difficult to 4 = very easya |
Clarity of instructions | 3.93 (0.27) | 3–4 | 1 = very unclear to 4 = very clearb |
Desirability of appearance | 3.64 (0.50) | 3–4 | 1 = not at all to 4 = very muchc |