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Table 2 Results of system usability scale, decisional conflict, and eye tracking

From: Development and preliminary user testing of the DCIDA (Dynamic computer interactive decision application) for ‘nudging’ patients towards high quality decisions

  Conventional DCIDA
System Usability Score, mean (range) - 74 (68–85)
Decisional conflict uncertainty subscale (0 = good, 4 = bad),   
I am clear about the best choice for me 2.9 2.3
I feel sure about what to choose 2.8 2.2
This decision is easy for me to make 3.4 3.1
Overall score 50.4 38.3
Mean fixation duration (secs)   
Most important attribute 4.7 5.6
2nd most important attribute 4.2 3.3
Least important attribute 3.1 1.1
Other attributes 14.1 8.5
Other areas of the screen 16.2 12.8
Total 42.3 31.3
Mean relative fixation   
Most important attribute 18% 30%
2nd most important attribute 16% 18%
Least important attribute 12% 6%
Relative fixation – in 7 participants changed preference   
Most important attribute 17% 34%
2nd most important attribute 14% 19%
Least important attribute 10% 5%