| Standardised and limited number of drugs | 318 (91.9) | 74 (94.9) | 149 (92.0) | 79 (89.8) | 0.478 |
| System for reporting and analysis of adverse events available in departments | 170 (63.9) | 32 (56.1) | 85 (62.0) | 48 (78.7) | 0.101 |
| System for reporting and analysis of adverse events available in the hospital | 174 (50.7) | 36 (46.2) | 69 (43.9) | 54 (60.7) | 0.231 |
| Guideline/protocol for the prevention of wrong patient/wrong surgical procedure | 129 (47.1) | 32 (53.3) | 60 (45.5) | 30 (42.9) | 0.459 |
| Electronic drug prescription system | 138 (39.8) | 38 (48.7) | 60 (37.3) | 34 (38.2) | 0.215 |