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Table 3 Results of the system usability scale (SUS)

From: Evaluation of a clinical decision support system for rare diseases: a qualitative study

SUS-item Question N (valid) Mean SD
1 I think that I would like to use this system frequently 7 3.85 0.9897
2 I find the system unnecessarily complex 7 1.71 0.4518
3 I thought the system was easy to use 7 3.71 0.4518
4 I think that I need the support of a technical person to be able to use this system 7 2.57 0.4949
5 I found the various functions in this system were well integrated 7 3.85 0.8330
6 I thought there was too much inconsistency in this system 7 2 0.5345
7 I would imagine that most people would learn to use this system very quickly 7 4.57 0.4949
8 I found the system very cumbersome to use 7 2 0
9 I felt very confident using the system 7 3.71 1.1606
10 I needed to learn a lot of things before I could get going with this system 7 2.14 0.8330
Overall SUS score 73.21
  1. n = 7 participants, mean rating (5-point scale strongly disagree = 1; disagree = 2; neutral = 3; agree = 4; strongly agree = 5), standard deviations (SD) and overall SUS score
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