Table 2 Frequency of most prevalent influential factors reported by each category of health professional and overall

Beliefs about consequences

Advantages

It helps patients to think about the decision

1

8 (53)

7 (58)

3 (33)

18 (50)

25 (44)^a

Its visual content is helpful for patients

2

5 (33)

4 (33)

2 (22)

11 (31)

14 (25)^a

It enables expression of preferences

3

2 (13)

5 (42)

1 (11)

8 (22)

9 (16)

It promotes decision making

4

1 (7)

4 (33)

3 (33)

8 (22)

9 (16)

Disadvantages

Its use didn’t fit in with program timing

5

1 (7)

5 (42)

7 (78)

13 (36)

15 (45)^a

Its content is incomplete

6

2 (13)

2 (17)

4 (44)

8 (22)

10 (30)^a

Anticipated regret

I would regret if I didn’t use it

7

5 (33)

8 (67)

3 (33)

16 (44)

16 (62)^a

I would not regret if I didn’t use it

8

4 (27)

1 (8)

5 (56)

10 (28)

10 (38)^a

Appraisal

Positive appraisal

9

11 (73)

12 (100)

6 (67)

29 (81)

33 (92)^a

Negative appraisal

10

0 (0)

1 (8)

2 (22)

3 (8)

3 (8)

Environmental context and resources

Facilitators

Its availability in the office

11

12 (80)

9 (75)

6 (67)

27 (75)

47 (67)^a

Its comprehensibility for patients

12

3 (20)

5 (42)

1 (11)

9 (25)

10 (14)^a

It must be brief

13

2 (13)

2 (17)

2 (22)

6 (17)

7 (10)

I have enough time to present it

14

1 (7)

3 (25)

0 (0)

4 (11)

4 (6)

Barriers

Not having enough time to present it

15

12 (80)

7 (58)

7 (78)

26 (72)

48 (58)^a

If it is too complex for patients

16

5 (33)

7 (58)

4 (44)

16 (44)

21 (25)^a

If it is available in print form only

17

3 (20)

0 (0)

0 (0)

3 (8)

4 (5)

If its content is unbalanced/biased

18

0 (0)

3 (25)

0 (0)

3 (8)

3 (4)

Social influences

Approve

Colleagues

19

11 (73)

11 (92)

5 (56)

27 (75)

29 (64)^a

My family

20

3 (20)

3 (25)

0 (0)

6 (17)

7 (16)^a

Disapprove

Colleagues

21

5 (33)

4 (33)

2 (22)

11 (31)

11 (58)^a

A colleague with extensive experience

22

3 (20)

0 (0)

0 (0)

3 (8)

3 (16)^a

Social/professional role and identity

Moral norms

It is my duty to present it

23

2 (13)

3 (25)

2 (22)

7 (19)

8 (67)^a

Knowledge

Knowledge

I don’t know of any PtDAs

24

11 (73)

4 (33)

8 (89)

23 (64)

23 (59)^a

I know the government pamphlet

25

1 (7)

9 (75)

0 (0)

10 (28)

10 (26)^a

I know a PtDA for another decision

26

4 (27)

1 (8)

1 (11)

6 (17)

6 (15)

Emotions

Emotions

Give me satisfaction

27

2 (13)

2 (17)

4 (44)

8 (22)

9 (53)^a

Reassure me

28

3 (20)

1 (8)

0 (0)

4 (11)

4 (24)^a

Beliefs about capabilities

Self-efficacy

I feel comfortable to use it

29

3 (20)

7 (58)

1 (11)

11 (31)

13 (68)^a

Motivation and goals

Incentives

It is a relevant source of information

30

11 (73)

9 (75)

4 (44)

24 (67)

38 (75)^a

If I have to decide with my patient

31

1 (7)

6 (50)

3 (33)

10 (28)

11 (22)

My patient’s uncertainty

32

0 (0)

0 (0)

2 (22)

2 (6)

2 (4)

Skills

Skills development

Need a prior training to use it properly

33

4 (27)

4 (33)

1 (11)

9 (25)

11 (100)^a

Behavioral regulation

Action planning

Its prior presentation by a nurse

34

8 (53)

0 (0)

3 (33)

11 (31)

17 (57)^a

Given to patient before consultation

35

2 (13)

0 (0)

5 (56)

7 (19)

13 (43)^a