Table 3.

Internal consistency of the HSOPSC questonnaire

Dimensions	Cronbach’s alpha
Teamwork within units	0.74
Supervisor/manager expectations and actions promoting patient safety	0.59
Organisational learning–continuous improvement	0.74
Management support for patient safety	0.41
Overall perceptions of patient safety	0.49
Feedback and communication about error	0.66
Communication openness	0.25
Frequency of events reported	0.8
Teamwork across units	0.17
Staffing	0.37
Handoffs and transitions	0.8
Non-punitive response to errors	0.62
Overall	0.896