Table 1 Wording, respective factor and mean score per group of the TPB items (items translated from the German original)

V03

Within my daily routine I can apply the checklist correctly. (pbc)

5.6 (1.5)

5.3 (1.6)

V05

I promote checklist use amongst my team-members. (pbc)

6.0 (1.4)

5.4 (1.7)

V17

My behaviour influences whether or not the checklist is used correctly at a given surgical procedure. (pbc)

6.4 (1.0)

6.1 (1.3)

V21

I have a say on the correct checklist use within my team. (pbc)

5.9 (1.5)

5.2 (1.7)

V04

Checklist use facilitates speaking up in the OR. (att)

5.8 (1.4)

5.7 (1.4)

V06

Checklist use is far too time-consuming. (att)

5.7 (1.6)

5.7 (1.5)

V09

Checklist use decreases adverse events. (att)

6.3 (1.1)

6.1 (1.2)

V13

Checklist use hinders the flow of information among OR-team members. (att)

6.1 (1.6)

6.0 (1.5)

V19

Checklist use enhances paying attention to patient safety. (att)

6.5 (0.8)

6.4 (0.9)

V20^a

Checklist use interferes with my tasks. (att)

5.9 (1.6)

5.7 (1.6)

V22^a

A well-functioning OR-team does not need a checklist. (att)

6.4 (1.3)

6.4 (1.1)

V15

Surgeons look down upon checklist use. (norms)

4.5 (1.9)

4.4 (1.9)

V18

My colleagues take checklist use serious. (norms)

5.7 (1.3)

5.6 (1.3)

V23

My supervisor promotes checklist use. (norms)

6.3 (1.3)

6.1 (1.3)

V24

I am expected to use the checklist seriously. (norms)

6.4 (1.2)

6.1 (1.4)

V07

I will promote checklist use. (int)

6.3 (1.0)

5.8 (1.3)

V08

I will support my colleagues with using the checkliste. (int)

6.5 (0.9)

6.1 (1.2)

V10

Next time I am up to decide, I will apply the checklist. (int)

6.2 (1.3)

6.2 (1.1)

V11

It is my plan to carefully mind the use of the checklist. (int)

6.4 (1.0)

6.2 (1.0)

V16

I want the checklist to be used with every patient. (int)

6.6 (0.9)

6.5 (0.9)

V25^b

It is my duty to correctly use the checklist. (int)

6.6 (0.9)

6.3 (1.2)