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Table 4 Item and questionnaire scores of perceived usability (SUS-10) and satisfaction (CSQ-3) with iCBT services and organisational implementation climate (OIC) by professionals at post study

From: Organisational implementation climate in implementing internet-based cognitive behaviour therapy for depression

Measure1

Wave

Item2

Scale3

n

Mean (SD)

Median

Min

Max

n

Mean (SD)

Median

Min

Max

Alpha4 (95%CI)

SUS-10

111

3.04 (0.29)

3.00

2.14

3.80

103

63.76 (15.53)

67.50

27.50

90.00

0.83 (0.75-0.90)

Wave 1

48

2.99 (0.20)

3.00

2.70

3.60

48

70.26 (10.82)

72.50

42.50

90.00

0.76 (0.65-0.85)

Wave 2

63

3.08 (0.34)

3.10

2.14

3.80

55

58.09 (16.84)

57.50

27.50

90.00

0.84 (0.77-0.90)

CSQ-3

111

3.02 (0.66)

3.00

1.00

4.00

108

9.11 (1.96)

9.00

3.00

12.00

0.82 (0.73-0.89)

Wave 1

48

3.13 (0.51)

3.00

2.00

4.00

48

9.40 (1.54)

9.00

6.00

12.00

0.65 (0.49-0.78)

Wave 2

63

2.93 (0.75)

3.00

1.00

4.00

60

8.88 (2.23)

9.00

3.00

12.00

0.89 (0.83-0.93)

OIC

111

3.62 (0.46)

3.58

2.50

4.92

89

43.21 (5.62)

43.00

30.00

59.00

0.76 (0.64-0.85)

Wave 1

48

3.57 (0.46)

3.54

2.75

4.92

47

42.96 (5.50)

43.00

33.00

59.00

0.76 (0.64-0.85)

Wave 2

63

3.66 (0.47)

3.70

2.50

4.75

42

43.50 (5.81)

43.00

30.00

54.00

0.77 (0.67-0.86)

  1. 1 SUS (10 items) applied a 5-point Likert scale with 1 = strongly disagree to 5 = strongly agree. Negative SUS items were rescored to align with positive worded items. CSQ (3 items) applied a 4-point scale with differing response options indicating agreement with statements. OIC (12 questions) applied a 5-point Likert scale with 1= strongly disagree to 5 = strongly agree
  2. 2 Item statistics using raw item ratings. All cases with more than one item rated were included
  3. 3 Scale statistics using summed item rating scores. For SUS-10, the summed item ratings were converted to a 0-100 scale following Brook (1996). Only complete cases were included
  4. 4 Standardised Cronbach’s alpha using a correlation matrix