Types of leaders interviewed (42 interviews)
| Position | N (%) |
| Physician | 12 (26) |
| Vice president for quality and safety | 10 (21) |
| Chief medical officer | 8 (17) |
| Quality officer | 6 (13) |
| Chief executive officer | 5 (11) |
| Patient-safety officer/programme director | 5 (11) |
| Total interviewed | 46 (100) |