Anticipated number of cases during specified number of shifts and the number of days to experience the specified number of cases with 95% confidence. Season did not have a significant effect for neurosurgery
| Neurosurgery | ||||
| Institution 1 | Institution 2 | Institution 3 | Institution 4 | |
| Number of 24-hour shifts | Expected number of urgent cases (95% CI) | |||
| 5 | 2.3 (0 to 6) | 1.2 (0 to 4) | 1.3 (0 to 4) | 0.7 (0 to 3) |
| 10 | 4.7 (1 to 9) | 2.5 (0 to 6) | 2.6 (0 to 6) | 1.3 (0 to 4) |
| 12 | 5.7 (2 to 11) | 3.0 (0 to 7) | 3.2 (0 to 7) | 1.6 (0 to 5) |
| 20 | 9.4 (4 to 16) | 5.0 (1 to 10) | 5.3 (1 to 10) | 2.6 (0 to 6) |
| Minimum number of cases | 24-hour shifts resulting in a 95% certainty of experiencing at least the stated minimum number of cases | |||
| 5 | 19 | 37 | 35 | 73 |
| 10 | 33 | 64 | 59 | 124 |
| 20 | 59 | 113 | 105 | 218 |