Interference with evolution of signs: | ||||
---|---|---|---|---|
Group: | Yes | No | Total | |
Surgeons | 189 | 56 | 245 | |
Non-surgeons | 266 | 28 | 294 | |
X2 = 2.5798, p > 0.1 | ||||
Effect on diagnosis: | ||||
Group | Enhance | Impair | No effect | Total |
Surgeons | 21 | 175 | 49 | 245 |
Non-surgeons | 7 | 245 | 42 | 294 |
28 | 42 | 91 | 539 | |
X2 = 2.1248, p > 0.3 | ||||
Effect on outcome: | ||||
Group | Adverse | Beneficial | None | Total |
Surgeons | 112 | 77 | 56 | 245 |
Non-surgeons | 182 | 35 | 77 | 294 |
294 | 112 | 133 | 539 | |
X2 = 4.5055, p > 0.1 |