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Table 6 The SUS score of the ESR

From: Evaluation of the clinical application effect of eSource record tools for clinical research

Itemsa

Total

CRO experts

Clinicians

n

13

9

4

1. I think that I would like to use this system frequently

 Mean (SD)

4.1 (1.2)

3.8 (1.3)

4.8 (0.5)

 Median [Q1,Q3]

4.0 [4.0,5.0]

4.0 [3.0,5.0]

5.0 [4.8,5.0]

2. I found the system unnecessarily complex

 Mean (SD)

2.5 (1.1)

2.9 (1.1)

1.8 (1.0)

 Median [Q1,Q3]

2.0 [2.0,3.0]

3.0 [2.0,3.0]

1.5 [1.0,2.2]

3. I thought the system was easy to use

 Mean (SD)

4.3 (0.9)

4.3 (0.5)

4.2 (1.5)

 Median [Q1,Q3]

4.0 [4.0,5.0]

4.0 [4.0,5.0]

5.0 [4.2,5.0]

4. I think that I would need the support of a technical person to be able to use this system

 Mean (SD)

3.5 (1.3)

3.3 (1.4)

3.8 (1.3)

 Median [Q1,Q3]

4.0 [2.0,4.0]

4.0 [2.0,4.0]

4.0 [3.5,4.2]

5. I found the various functions in this system were well integrated

 Mean (SD)

3.9 (0.8)

3.9 (0.8)

4.0 (0.8)

 Median [Q1,Q3]

4.0 [3.0,4.0]

4.0 [3.0,4.0]

4.0 [3.8,4.2]

6. I thought there was too much inconsistency in this system

 Mean (SD)

2.8 (1.0)

2.9 (1.1)

2.8 (1.0)

 Median [Q1,Q3]

3.0 [2.0,3.0]

3.0 [2.0,3.0]

2.5 [2.0,3.2]

7. I believe that most people would learn to use this system very quickly

 Mean (SD)

4.3 (0.6)

4.1 (0.6)

4.8 (0.5)

 Median [Q1,Q3]

4.0 [4.0,5.0]

4.0 [4.0,4.0]

5.0 [4.8,5.0]

8. I found the system very cumbersome to use

 Mean (SD)

2.5 (1.1)

2.7 (1.1)

2.0 (0.8)

 Median [Q1,Q3]

2.0 [2.0,3.0]

2.0 [2.0,3.0]

2.0 [1.8,2.2]

9. I felt very confident using the system

 Mean (SD)

4.2 (0.8)

4.1 (0.8)

4.5 (1.0)

 Median [Q1,Q3]

4.0 [4.0,5.0]

4.0 [4.0,5.0]

5.0 [4.5,5.0]

10. I needed to learn many things before I could start using this system

 Mean (SD)

2.8 (1.2)

3.1 (1.2)

2.0 (0.8)

 Median [Q1,Q3]

3.0 [2.0,3.0]

3.0 [2.0,3.0]

2.0 [1.8,2.2]

The SUS total scoreb

 Mean (SD)

66.9 (16.7)

63.3 (15.4)

75.0 (18.8)

 Median [Q1,Q3]

70.0 [50.0,80.0]

60.0 [50.0,75.0]

81.2 [71.9,84.4]

  1. aThe 10 items of the SUS are calculated using the unconverted raw scores
  2. bThe SUS total score needs to be converted