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Table 9 Internal consistency, means and standard deviations of scores for predictive clinical measures, by theoretical and conceptual model, for each of the six clinical behaviours

From: Instrument development, data collection, and characteristics of practices, staff, and measures in the Improving Quality of Care in Diabetes (iQuaD) Study

  

Behaviour 1: Providing weight management advice

Behaviour 2: Prescribing additional antihypertensive drugs

Behaviour 3: Examining feet (circulation)2

Model

Constructs

N items

Internal consistency1

Mean (SD)

N items

Internal consistency1

Mean (SD)

N items

Internal consistency1

Mean (SD)

TPB

Attitude

3

0.72

6.27 (0.78)

3

0.95

5.71 (1.04)

3

0.70

6.13 (1.01)

 

Subjective norm

2

0.42

5.92 (0.98)

2

0.59

5.56 (1.09)

2

0.69

5.61 (1.51)

 

PBC

2

0.41

5.06 (1.12)

2

0.33

5.22 (1.06)

2

0.32

5.62 (1.10)

 

Intention strength

3

0.87

6.08 (0.86)

3

0.93

5.46 (1.09)

3

0.97

5.56 (1.67)

 

Direct estimation of intention

1

n/a

9.00 (1.82)

1

n/a

7.68 (2.11)

1

n/a

7.36 (3.44)

SCT

Outcome expectancies

3

0.72

6.27 (0.78)

3

0.95

5.71 (1.04)

3

0.70

6.13 (1.01)

 

Self-efficacy

10

0.92

4.95 (1.10)

9

0.92

4.63 (1.13)

4

0.90

5.73 (1.28)

LT

Anticipated consequences

2

0.40

6.26 (0.98)

2

0.52

5.77 (1.20)

2

0.37

6.50 (0.85)

 

Evidence of habit

2

0.69

5.94 (1.00)

2

0.50

5.41 (1.17)

2

0.81

5.46 (1.69)

n/a

Self-reported habit index

12

0.93

4.82 (1.11)

12

0.94

4.25 (1.21)

12

0.96

4.57 (1.57)

n/a

Past behaviour

1

n/a

7.79 (2.12)

1

n/a

6.39 (2.11)

1

n/a

6.73 (3.35)

Plans

Action planning

3

0.92

5.88 (0.92)

3

0.94

5.91 (0.84)

4

0.94

6.22 (0.99)

 

Coping planning

10

0.96

4.45 (1.26)

9

0.95

4.61 (1.22)

4

0.97

5.53 (1.48)

  

Behaviour 4: Providing advice on self-management

Behaviour 5: Prescribing additional therapy for managing glycaemic control

Behaviour 6: Providing general education

Model

Constructs

N items

Internal consistency 1

Mean (SD)

N items

Internal consistency 1

Mean (SD)

N items

Internal consistency 1

Mean (SD)

TPB

Attitude

3

0.88

6.29 (0.82)

3

0.93

6.00 (0.79)

3

0.80

6.37 (0.75)

 

Subjective norm

2

0.56

5.77 (1.07)

2

0.47

5.69 (0.94)

2

0.57

5.82 (1.08)

 

PBC

2

0.50

5.29 (1.14)

2

0.36

5.24 (1.07)

2

0.49

5.41 (1.12)

TPB

Intention strength

3

0.93

5.73 (1.17)

3

0.88

5.57 (0.94)

3

0.94

5.92 (1.03)

TPB

Direct estimation of intention

1

n/a

8.16 (2.35)

1

n/a

7.89 (1.97)

1

n/a

8.56 (2.03)

SCT

Outcome expectancies

3

0.88

6.29 (0.82)

3

0.93

6.00 (0.79)

3

0.80

6.37 (0.75)

 

Self-efficacy

9

0.92

5.38 (1.05)

8

0.92

5.04 (1.10)

11

0.92

4.79 (1.09)

LT

Anticipated consequences

2

0.42

6.24 (1.02)

2

0.57

6.03 (1.09)

2

0.54

6.32 (1.11)

 

Evidence of habit

2

0.81

5.67 (1.21)

2

0.66

5.61 (1.01)

2

0.81

5.86 (1.14)

n/a

Self-reported habit index

12

0.96

4.98 (1.32)

12

0.95

4.42 (1.25)

12

0.96

5.03 (1.30)

n/a

Past behaviour

1

n/a

7.72 (2.42)

1

n/a

6.87 (2.24)

1

n/a

7.93 (2.36)

Plans

Action planning

3

0.96

5.44 (1.16)

3

0.97

5.62 (1.08)

3

0.97

5.58 (1.17)

 

Coping planning

9

0.96

4.71 (1.36)

8

0.96

4.76 (1.31)

11

0.96

4.49 (1.26)

  1. TPB Theory of Planned Behaviour, SCT Social Cognitive Theory, LT Learning Theory
  2. All items scored 1 to 7 except for Direct estimation of intention and past behaviour which were scored 1 to 10.
  3. 1Cronbach's alpha for measures with > 2 items. Pearson correlations for measures with 2 items.
  4. 2Two sets of four self-efficacy items were used to assess self-efficacy to examine the circulation and sensation of feet separately. Internal consistency for the items measuring sensation was 0.91, mean = 5.69, SD = 1.32
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Implementation Science

ISSN: 1748-5908