| Incident type | Description* | No (valid %) |
| Mechanical ventilation/intravascular lines/cannulas/other material/equipment (n = 1542)† | Wrong settings | 260 (6.2) |
| Unplanned removal | 147 (3.5) | |
| Wrong usage | 92 (2.2) | |
| Loosening | 79 (1.9) | |
| Subcutaneous infusion | 74 (1.8) | |
| Dysfunctional machine | 75 (1.8) | |
| Wrong connection | 64 (1.5) | |
| Material damage | 43 (1.0) | |
| Unavailable | 33 (0.8) | |
| Occlusion | 29 (0.7) | |
| Prolonged indwelling time | 17 (0.4) | |
| Other | 471 (11.2) | |
| Combination of descriptions | 65 (1.5) | |
| Medication/nutrition/blood products (n = 2045) | Wrong dose | 463 (11.0) |
| Wrong infusion rate | 214 (5.1) | |
| Wrong time | 143 (3.4) | |
| Incomplete administration | 126 (3.0) | |
| Wrong concentration | 105 (2.5) | |
| Wrong product | 102 (2.4) | |
| Wrong route of administration | 52 (1.2) | |
| Product out of date | 50 (1.2) | |
| Patient misidentification | 47 (1.1) | |
| Other | 563 (13.4) | |
| Combination of descriptions | 102 (2.4) | |
| Diagnostic procedures (n = 621) | Exam not performed | 140 (3.3) |
| Unnecessary exam | 61 (1.5) | |
| Delayed results | 46 (1.1) | |
| Material not received | 26 (0.6) | |
| Wrong time | 21 (0.5) | |
| Wrong test requested | 15 (0.4) | |
| Patient misidentification | 12 (0.3) | |
| Wrong test performed | 8 (0.2) | |
| Other | 219 (5.2) | |
| Combination of descriptions | 38 (0.9) | |
| Other incident/combination of incidents (n = 638) | Other | 196 (4.7) |
| Total | 4198‡ |
*The predefined incident descriptions were divided into three main groups, relating to different stages in the process of care.
†These three main types of incidents were related to the same set of incident descriptions.
‡Descriptions were missing in 648/4846 incident reports.