| Perception domain | No˚ items | Mean | SD |
| 1. Overall perceptions of safety | 4 | 3.03 | 0.56 |
| 2. Frequency of events reported | 3 | 2.95 | 1.06 |
| 3. Supervisor/manager expectations & actions promoting patient safety | 4 | 3.11 | 0.76 |
| 4. Organizational learning-continuous improvement | 3 | 3.66 | 0.88 |
| 5. Teamwork within units | 4 | 3.20 | 0.71 |
| 6. Communication openness | 3 | 3.20 | 0.71 |
| 7. Feedback and communication about errors | 3 | 3.61 | 0.85 |
| 8. Non-punitive response to error | 3 | 3.03 | 0.93 |
| 9. Staffing | 4 | 3.04 | 0.72 |
| 10. Hospital management support for patient safety | 3 | 3.68 | 0.82 |
| 11. Teamwork across hospital units | 4 | 3.10 | 0.63 |
| 12. Hospital handoffs & transitions | 5 | 2.62 | 0.92 |
| Total | 43 | 3.19 | 0.44 |