Table 4 Usability by group

System Usability Scale n = 115

 I think that I would like to use this website frequently

82 (71.3)

39 (69.6)

43 (72.9)

p = .70

 I found the website unnecessarily complex

57 (49.6)

21 (37.5)

36 (61.0)

p = .012

 I thought the website was easy to use

96 (83.5)

49 (87.5)

47 (79.7)

p = .26

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

44 (38.3)

17 (30.4)

27 (45.8)

p = .09

 I found the various functions in this website were well integrated

90 (78.3)

42 (75.0)

48 (81.4)

p = .41

 I thought there was too much inconsistency in this website

51 (44.3)

20 (35.7)

31 (52.5)

p = .07

 I would imagine that most people would learn to use this website very quickly

99 (86.1)

50 (89.3)

49 (83.1)

p = .33

 I found the website very cumbersome to use

51 (44.3)

21 (37.5)

30 (50.8)

p = .15

 I felt very confident using the website

95 (82.6)

49 (87.5)

46 (78.0)

p = .18

 I needed to learn a lot of things before I could get going with this website

50 (43.5)

21 (37.5)

29 (49.2)

p = .21

M (SD)

M (SD)

M (SD)

F (df), p

 Total SUS score, (min = 0, max = 100) n = 115

60.69 (13.56)

64.55 (13.59)

57.04 (12.58)

F (1, 114) = 9.50, p = .003