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Differences among high-risk and low-risk groups (defined by a threshold of 7 points in SAS)
| Without complications | With complications | p | |||
|---|---|---|---|---|---|
| SAS <7 | SAS ≥7 | SAS <7 | SAS ≥7 | ||
| General | 237 | 449 | 20 | 17 | 0.021 |
| Hip | 127 | 194 | 4 | 9 | 0.579 |
| Spine | 84 | 166 | 14 | 4 | 0.000 |
| Long bone fracture | 8 | 14 | 0 | 2 | 0.536 |
| Knee | 17 | 74 | 0 | 1 | 1.000 |
| Tumour | 1 | 1 | 2 | 1 | 1.000 |
