Frequency of major and minor flow disruptions by their type, location, number and role of staff involved
| Major disruptions (out of 100%) | Minor disruptions (out of 100%) | |||||||||
| Layout | Environmental hazard | Interruptions | Usability/ equipment failure | Total | Layout | Environmental hazard | Interruptions | Usability/ equipment failure | Total | |
| 56 | 10 | 30 | 4 | 100 | 69 | 29 | 1 | 1 | 100 | |
| Flow disruption location | ||||||||||
| Anaesthesia workstation zone | 21 | 3 | 7 | 1 | 32.1 | 23.6 | 12.2 | 1 | 0 | 36.8 |
| Transitional zone 1 zone | 4 | 1.1 | 2.2 | 0 | 7.4 | 4.4 | 2 | 0.1 | 1 | 7.6 |
| Transitional zone 2 zone | 6 | 0.2 | 4.5 | 0.2 | 10.8 | 10.2 | 1.6 | 0.1 | 0 | 11.8 |
| Transitional zone 3 zone | 7 | 1.3 | 0.8 | 0.5 | 9.6 | 10.9 | 3.7 | 0.1 | 0.1 | 14.7 |
| Surgical table 1 zone | 7 | 1.4 | 4.8 | 1 | 14.2 | 4.2 | 4 | 0.3 | 0.1 | 8.6 |
| Surgical table 2 zone | 7.2 | 2 | 3.7 | 1.8 | 14.6 | 2.5 | 1.9 | 0 | 0.1 | 4.6 |
| Support zones | 2.4 | 0 | 2.4 | 0.5 | 5.3 | 4.3 | 1.1 | 1 | 0 | 6.4 |
| Supply zones | 2 | 0.3 | 1 | 0 | 3.3 | 5.8 | 1.2 | 1 | 0 | 8 |
| Other | 0.5 | 0 | 1.3 | 1 | 2.8 | 0.8 | 0.3 | 0.4 | 0 | 1.6 |
| Number of staff involved in flow disruption | ||||||||||
| 1 | 48 | 8.7 | 22 | 3.2 | 81.9 | 49.6 | 27.7 | 0.3 | 0.5 | 78.1 |
| >1 | 7.9 | 0.9 | 7 | 2.3 | 18.1 | 19.4 | 1 | 1.4 | 0.1 | 21.9 |
| Role of staff involved in flow disruption | ||||||||||
| Anaesthesiologist/student/resident | 22.7 | 3 | 7.6 | 1.6 | 34.9 | 32 | 12.2 | 0.3 | 0.2 | 44.8 |
| RN, circulating | 12.1 | 2.8 | 11.2 | 1.8 | 27.9 | 14.9 | 4.4 | 0.8 | 0.1 | 20.3 |
| MD, surgeon/student/resident | 7.7 | 1.7 | 1.7 | 0.9 | 12 | 10.2 | 2.8 | 0.5 | 0.1 | 13.6 |
| RN, scrub/surgical tech/student | 5.7 | 0.6 | 3.8 | 1.1 | 11.2 | 6.4 | 3.8 | 0.3 | 0 | 10.5 |
| Other | 4.5 | 1.5 | 7 | 1.1 | 14 | 7.7 | 2.6 | 0.5 | 0.1 | 10.9 |
MD, medical doctor; RN, registered nurse.